#Fiend Reincarnation

Contents

One-player (solo) high-difficulty adventure. 6~8 sessions. A structure where one PC sequentially defeats 5 legendary swordsmen and 1 wicked sorcerer, all revived as heroic spirit and fiend hybrids. No support or squad combat. A pure duel series.

• Recommended party: 1 PC (7th~9th dan). A single build specialized in Swordsmanship or martial arts is recommended.
• Difficulty: Extreme.
• Rules Covered: duel-only play / heroic spirit x fiend hybrid / school secret arts / divine-item acquisition chain / 1-person economy / Master advancement between sessions / Renown Title foreshadowing

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#Novel Homage

This adventure is built on a concept from the late Sengoku period, the age of legendary swordsmen: legends who lived through that age are "revived by the forbidden magic of a wicked practitioner." Each swordsman carries both their original sword art (heroic-spirit resonance) and a corrupted soul (the special nature of a fiend class). The original power remains intact, and fiendish deviation is layered on top.

The PC's goal is only one thing: cut them down one by one, from the front, in one-on-one combat. This adventure does not allow flight, ambush, or squad-based bypasses. Every duel touches both heroic-spirit honor and fiendish hunger. If the PC refuses to take part, the swordsman goes out to hunt nearby villages. If the PC takes part, it becomes a fight to the death.

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#Background

#World Context

Late Sengoku period. In the high mountains east of Kagura Domain stands Toyoura Abandoned Mountain Temple. 200 years ago, it was a Shingon esoteric temple, but it was used as the sealing site of a great evil dragon, and collapsed when the sealing mantra broke. It has since been left alone. The trace of the sealing mantra -- spirit-soul medium meridians -- remains underground.

#The Sorcerer's Appearance

3 months ago, one wicked onmyoji, Shikome-no-Tsukai, and Yorijin (combined career 7th dan), Aburatsuka Genzo, occupied this abandoned mountain temple. By combining the Spirit Realm Gate rules with the Apostle of Izanami rite, he developed a forbidden sorcery that summons heroic spirits of past swordsmen and fiend-transforms them at the same time.

Aburatsuka's goal is simple: "to make the most complete swordsman into my tool." He carries both reverence and jealousy toward swordsmanship. His frame was sickly and could not hold a sword well, but he wants the heroic spirits' martial force under his control. For that purpose, he is summoning and testing five swordsmen in sequence. His final target is Miyamoto Musashi -- the last swordsman who will become his "completed work."

#Principle of the Hybrid

The swordsmen Aburatsuka summons can use their lifetime divine items and techniques as-is through heroic spirit automatic resonance. However, the fiend-transformation rite performed at the same time brands their souls with the mark of corruption. Each swordsman is revived with the core nature of a specific fiend class (the madness of Shurado, Kekka's craving for an audience, etc.) overlaid onto them. Differences from the originals:

• Original heroic-spirit conditions (for example, divine item maintenance) remain unchanged.
• Fiendish deviation is added (for example, an impulse that cannot stop killing, weakening without an audience, healing reversing into harm, etc.).
• The sorcerer's thread (the Shikome-no-Tsukai's chain). The swordsmen cannot break it themselves. They become free only if the sorcerer dies, or the PC's sword grants release.

#Request

Three villages in Kagura Domain are massacred in succession. All survivor testimony is the same: "Samurai in white appeared at night and cut everyone down." 1 heroic spirit per village. Over 3 months, 5 heroic spirits are active in different directions. After a council, the domain lord decides on a solo mission. The basis is simple: even if they are faced by many, they want duels. In a melee, they vanish. A single swordsman is needed.

The PC is that one person.

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#Scent (香)

#Sense of the First Scene

The mountain path up to Toyoura Abandoned Mountain Temple smells of oil. The black candle oil used in the sealing mantra 200 years ago is still soaked into the soil. It sticks to the soles with every step.

Inside the main hall, candle smoke and the smell of dried blood are mixed together. Five summoning circles burn in different colors: white light, blue light, gold, blood-red, and a gray circle not yet lit. If four of them remain as extinguished ash, it means those four heroic spirits have already awakened and gone out.

In the ears of a swordsman facing a heroic spirit, only two sounds remain: their own heartbeat and the direction in which the opponent's sword cuts the air. Here there are no squads, no command, no support. There is only maai (間合).

From the heroic spirit's form, black fiend ichor runs thinly from the eyes and mouth. A film of corruption over a hero's face: that is the image this scenario sets.

#Voices of Key NPCs

Aburatsuka Genzo (first encounter -- cold honorific speech mixed with joy and observation):

"...Oh, you came back alive. You passed the four swordsmen I made and reached this place. As an artist, I am honored. The final summoning is worth showing you. If you stay still -- I will finish calling Lord Musashi for you."

Ito Ittosai (duel opening -- short, heavy low voice):

"Your blood is still warm. Stand. I will end this in one cut."

Tsukahara Bokuden (eyes closed in zazen -- deep resonance inside stillness):

"...Come close. I do not move. You must come and cut me. This is the fight of no-victory."

Sasaki Kojiro (provocation with hair blowing in the wind):

"There is no audience. A pity. Even so, I dance -- without the dance, I am no flower."

Miyamoto Musashi (overwhelming, half-substantial state -- speaks slowly, but every word falls heavy):

"Are you the last enemy I have met, or the first? One of the two. I will cut and confirm the answer."

#Mood Turns

• Prologue: the domain lord's map. Heroic spirits in five directions. The first moment the weight of "it is only you" lands.
• First heroic spirit (Ittosai): beginning of a 1-person drama. The PC feels a rhythm of breath different from party play.
• Around the third heroic spirit: accumulated victories + accumulated wounds. A growth curve where the PC discovers the swordsmen's "fiend weaknesses" personally.
• Entering the abandoned mountain temple: the light of five summoning circles. Four have gone out. The last one remains. The center of choice.
• Musashi's eyes: from this moment, the PC is no longer merely carrying out a request. They are a swordsman just before becoming a legend of the age.

#Gloom of Toyoura Abandoned Mountain Temple

• Ground: the ink from the sealing mantra 200 years ago seeped into the mountain soil and hardened as black stains.
• Walls: the marks of burned-away Buddhist statues remain as incised silhouettes. Even without the statues, the posture of prayer is carved into the stone.
• Ceiling: instead of spiderwebs, silver threads hang down in long strands. The chains of the Shikome-no-Tsukai. If cut, they regrow.
• Sound: where there is no heroic-spirit presence, there is silence -- not even wind enters the mountain temple. The PC's footsteps echo only once against the stone walls, then are swallowed.
• Smell: not a metal smell, but the scent after iron has melted. The remnants of two rites: sealing and summoning.

#Color Tones of the 5 Heroic Spirits

Each heroic spirit's duel site has its own color palette. The GM should repeat these colors in description.

• Ittosai's abandoned dojo: old brown and dust colors. Sun-burned wooden boards on all four walls.
• Nobutsuna's shrine ruin: blue-green moss + white stone steps. Cool enough for breath to show.
• Bokuden's mountain altar: gray-white stone + cloudy sky blue. A motionless landscape.
• Kojiro's riverside plain: silver-gray sandbar + yellow reeds. Only the wind dances.
• Musashi's abandoned mountain temple main hall: black + golden summoning circle + blood-red. The three colors of the rite.

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#1-Person Play Rules

#PC Prerequisites

• Dan: 7th~9th dan (8th dan recommended).
• Main attribute: Courage or Finesse +3 required. 1 corresponding core skill should be Master (4 points).
• Class: choose 1 from samurai / ronin / shinobi / shugenja / gaijin. Scholar, merchant, and onmyoji are not recommended (squad-dependent).
• School: must have at least 1 license. Ideally has a secret art.
• Equipment: 1 masterwork blade recommended. If the PC has the Dual-Wield trait, 2 masterwork blades are possible (Principle 3, Exception 1).
• Divine item: may begin with 1 item (additional acquisitions during the scenario).

#Recovery Interval

Between sessions, there is a "Return" phase. The PC returns to the domain castle and:

• recovers to maximum Wounds (with physician and Pure Land Monk NPC support).
• recovers to maximum Energy.
• gains an opportunity to invest skill point +1 in 1 core skill (1 time per session during the first 4 sessions).
• may buy or replace 1 piece of new equipment.

During sessions, natural recovery is impossible. Once a duel begins, it must be resolved to the end without external support or mid-fight return.

#1-Person Combat Balance

Each heroic spirit ranges from upper Elite-grade to lower lord-grade (Wounds 4~6). Normally, 1 PC facing one Elite-grade opponent is unfavorable, but:

• this adventure applies the duel principle (both sides gain +2 technique modifier).
• every heroic spirit has a "fiend weakness." Studying how to beat them is required.
• recovery and growth between duels strengthen the PC gradually.

#Survival Check

PC reaches Wounds 0 = combat defeat. But in this scenario, the PC does not die:

• the heroic spirits, following the courtesy of swordsmen, let defeated opponents live (09-09 Yoshitsune pattern).
• instead, that heroic spirit is strengthened by +1 Wound in the next duel (using the PC's defeat as its tool).
• if the PC suffers 3 consecutive defeats against one heroic spirit, the scenario fails (the heroic spirit abandons the PC, moves to another region, and village massacres accelerate).

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#5 Heroic Spirits -- Stat Blocks

Each heroic spirit is a mix of 7th~8th dan heroic-spirit resonance + roughly 5th-dan fiend class. Original Wounds 4~5 + fiend passive 1~2.

#Heroic Spirit 1. Ito Ittosai x Jikiniki -- "Hungry Two-Blade Sword"

Ito Ittosai (伊藤 一刀齋) x Jikiniki (食人鬼)
Wounds: 5 | Defense: 13 | Energy: 11
Attributes: Finesse +3, Courage +2, Physique +2, Wisdom +1
School: Ito Itto-ryu (licensed + secret art held)
Weapon: Ittoryu is "one-sword style" that holds only one blade, but this fiend-transformed version uses 2 short wakizashi as dual swords (corrupted version)

Heroic-Spirit Aspect:

• One Cut, Instant Kill (一刀即殺) [secret art]: 4 Energy, 1 time per duel. First attack is automatic Critical Hit + Pierce all. On hit, 3 Wounds. The philosophy from life: "settle everything in one cut."
• Speed of the Draw: [aptitude] first-round initiative modifier +3 (first breath only).

Fiend Corruption -- Jikiniki Element:

• Hunger: instead of dealing harm to the enemy (PC), restore own Wounds by 1 (1 time per round). If the fight goes long, this one "eats" the PC's bleeding and fully heals.
• Weakness to Exploit: Hunger triggers only when there is a target shedding blood. If the PC is not bleeding, it cannot trigger. If the PC draws out the battle without being hit, this one suffers the side effect of gnawing his own frame, taking Wounds -1 self-loss each round.

First duel. The easiest of the set. If the PC plays defensively, odds are good.

#Heroic Spirit 2. Kamiizumi Nobutsuna x Tatarigami -- "Backlash of No-Thought"

Kamiizumi Ise-no-Kami Nobutsuna (上泉 伊勢守 信綱) x Tatarigami (祟り神)
Wounds: 5 | Defense: 15 | Energy: 12
Attributes: Finesse +3, Wisdom +2, Courage +1, Presence +2
School: Shinkage-ryu (founder -- licensed + secret art "Life-Giving Sword")
Weapon: uchigatana (masterwork -- "Saketeki" (酒滴), symbol of Shinkage-ryu)

Heroic-Spirit Aspect:

• Life-Giving Sword (活人劍) [secret art]: 4 Energy, 1 time per duel. Negate attack + return the PC's attack to the PC exactly as-is. Original power maintained.
• Formless Stance [aptitude]: read the enemy's first technique (Defense +3 for that round).

Fiend Corruption -- Tatarigami Element:

• Backlash: Automatically reverses healing, divine, and morale-type effects used by the PC. Since this scenario is 1-person play, PC self-healing attempts convert into harm -- in other words, the PC cannot use recovery maneuvers. Even a Medicine-dedicated Master self-emergency treatment is reversed.
• Barrier Absorption: If the PC unfolds a barrier or wall effect, absorb it and recover Wounds +1.
• Weakness to Exploit: The principle of the fiend corruption is "denial of faith." If the PC faces him with pure martial skill without faith (a build with no Pure Land Monk or arahitogami line), Backlash becomes meaningless. Also, a suicidal charge (an attack that disregards one's own frame) leaves Backlash without a "thing to return."

Second duel. Harsh for PCs who rely on recovery and defense. Continuous-offense builds are favored.

#Heroic Spirit 3. Tsukahara Bokuden x Kaibutsu -- "The Unmoving Move"

Tsukahara Bokuden (塚原 卜傳) x Kaibutsu (怪佛)
Wounds: 7 | Defense: 17 | Energy: 10
Attributes: Wisdom +3, Physique +3, Courage +1, Finesse +0
School: Katori Shinto-ryu (source line -- licensed + secret art "Heaven-Earth-Human Three Stages")
Weapon: tachi (masterwork -- "Ichino-Tachi," one blade)

Heroic-Spirit Aspect:

• Strike of No-Victory (無勝の一擊) [secret art]: 5 Energy, 1 time per combat. The essence of "a fight that does not win." The PC's next attack automatically fails regardless of check. (The PC gets that attack's Energy back -- but spends one chance for that breath.)
• Heaven-Earth-Human Three Stages [licensed]: 3 Energy, 1 time per round. 3-hit combo, each check independent.

Fiend Corruption -- Kaibutsu Element:

• Immovable (不動): This heroic spirit does not move. Fights while seated at the altar. Cannot move zones. Domination +5.
• Sanctified Zone: The zone where this one sits is treated as the Core Zone. All Energy costs +1 (Principle 1 target -- single-source +1 bonus).
• Weakness to Exploit: This one is vulnerable to area attacks and ranged attacks. Also, because he does not move, mobility can force attack timing. Hasso-tobi (if Yoshitsune has joined) / shinobi ambush / gaijin teppo are all strong.

Third duel. A type whose difficulty fully reverses based on the PC's approach. Very hard for a pure melee swordsman. Easy if long-range or ambush options exist.

#Heroic Spirit 4. Sasaki Kojiro x Kekka -- "Dance of the Swallow"

Sasaki Kojiro (佐々木 小次郎) x Kekka (血花)
Wounds: 6 | Defense: 14 | Energy: 13
Attributes: Finesse +3, Presence +3, Courage +2, Fate +1
School: Ganryu (founder -- Hien technique secret art)
Weapon: nodachi "Monohoshizao" (long sword, treated as divine-item grade -- 2.5m greatsword)

Heroic-Spirit Aspect:

• Hien Technique (Tsubame-gaeshi) [secret art]: 5 Energy, 1 time per combat. Automatic Critical Hit + 2 consecutive strikes + Pierce all on the second strike. The essence of the original "upcut immediately after a downward cut."
• Reach of the Long Sword: [aptitude] when attacking an enemy in the same zone, the PC's counterattack check -2. This one reaches first.

Fiend Corruption -- Kekka Element:

• Blood-Red Dance: Treat the battlefield as a "stage." Each time the PC takes harm, Kekka harm-amplification stack +1 (maximum 5). On reaching 5 stacks, release an area 2 Wounds burst (applies if the PC is in the same zone, and reaches up to 1 adjacent zone from outside).
• No Audience = Weakened: This fight happens in an isolated place. If there is no audience (NPCs or squad), the Kekka dance cannot be completed, so all attack checks -1. That is this one's weakness. The PC must not call an audience.
• Weakness to Exploit: The long sword's reach can be broken by zone movement. If the PC leaves the same zone, this one must approach, and while approaching loses counterattack rights. Kekka stacks do not build if the PC is not hit -- a perfect-defense build can win.

Fourth duel. Requires both speed and defense. Usually the hardest mid-stage strong enemy.

#Heroic Spirit 5. Miyamoto Musashi x Shurado -- "Final Nito-ryu"

Miyamoto Musashi (宮本 武蔵) x Shurado (修羅道)
Wounds: 8 | Defense: 15 | Energy: 14
Attributes: Courage +3, Finesse +3, Physique +2, Wisdom +2
School: Niten Ichi-ryu (二天一流, founder -- licensed + secret art "Five Rings Extremity")
Weapon: uchigatana "Musashi no Tachi" + wakizashi "Seijin" (dual-sword two-weapon style -- his own school, so Principle 3 Exception 1 is automatically satisfied)

Heroic-Spirit Aspect:

• Completion of Nito-ryu [aptitude]: attack checks +2. Combined techniques of two weapons can be paid as a total cost in 1 breath (at least Ito Itto-ryu license level).
• Five Rings Extremity (五輪の極) [secret art]: 6 Energy, 1 time per combat. A 5-stage combo of earth, water, fire, wind, and void. Every check is an independent automatic Critical Hit. Pierce all. Final strike forces PC Wounds 2 reduction (not harm -- fixed reduction). Symbolizes Musashi's "worldview integration."
• Experience of 60 Victories: [aptitude] after seeing each of the PC's school secret arts once, reads it (+2 Defense, limited to that school).

Fiend Corruption -- Shurado Element:

• Berserker Rage: Each round in which he deals harm, Energy +1 (maximum +3 within the round). A round in which he fails to deal harm becomes frenzy (PC attack automatic Critical Hit -- a variant of original Shurado's suicidal madness).
• Weakness to Exploit: In Shurado Berserker Rage, the frenzy of a "round in which he failed to deal harm" self-destructs the moment the PC is caught Defenseless. If the PC only maintains evasion reservation and endures during a frenzy round, Musashi spends his own momentum in the frenzy and loses Energy -5. When the second frenzy round arrives, he weakens rapidly. However, if he fails to drop the PC during a frenzy round, Musashi suffers Wounds -1 self-loss.

Final heroic-spirit duel. Outside the normal scale. The upper limit of a PC just before Renown Title.

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#Sorcerer -- Aburatsuka Genzo

Aburatsuka Genzo (油塚 源蔵) -- onmyoji 4th dan x Shikome-no-Tsukai 5th dan x Yorijin 3rd dan
Wounds: 4 (main form) | Defense: 12 | Energy: 10
Attributes: Wisdom +3, Presence +2, Fate +2, Physique +0, Courage +0, Finesse +1

Main Fight Danger: lower Elite-grade. The main form is weak.

Methods:

• Heroic Spirit Resummoning: resummon 1 already defeated heroic spirit in vengeance state (half Wounds, half techniques). Up to 2.
• Chain Manipulation: instantly move a heroic spirit to any zone. Can intrude into a duel (applies fear to the PC).
• Anatomy Diagram: Yorijin technique -- when making a melee attack, make the PC's Wounds reduction 2 times.

Approach to Defeat:

1. If handling the heroic spirits first: once the sorcerer uses up 2 resummons, only the main form remains. The main form can be defeated within 1 round.
2. If striking the sorcerer directly first: the sorcerer uses already summoned heroic spirits as his defensive wall. The heroic spirits refuse simultaneous duel demands (by the sorcerer's command) and join the melee. The PC is driven into many against 1. Extreme difficulty.

This choice is the scenario's philosophical decision point.

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#Scenario Flow -- Session-by-Session Structure

#Prologue -- Request and First Traces

• Receive the request at Kagura Domain castle. The domain lord marks the appearance points of the 5 swordsmen on a map -- the PC can freely choose the order.
• Map:
• Ittosai appearance point: abandoned dojo near Shimoya village in the east.
• Nobutsuna appearance point: ruins of Kamizumi Shrine in the north.
• Bokuden appearance point: shrine altar in the central mountains.
• Kojiro appearance point: isolated plain by the Karanuki riverside in the west.
• Musashi appearance point: southern Toyoura Abandoned Mountain Temple (where the sorcerer is -- reached last).

Recommended attack order: Ittosai -> Nobutsuna -> Bokuden -> Kojiro -> Musashi (+ sorcerer). Difficulty rises gradually.

#Session 1 -- Ittosai (Hungry Two-Blade Sword)

Location: abandoned dojo. There is a legend that Ittosai actually trained in this region. Now the old wooden dojo is full of spiderwebs.

Entry Scene: The PC opens the dojo door -- in the middle of the dojo sits Ittosai, holding wakizashi in both hands. He stands and says:

"Anyone will do. Stand. Your blood is still warm."

Duel. One-on-one.

Spoils on Victory:

• Ito Itto-ryu Inheritance Token: 1 type of transmission certificate. If the PC's current Swordsmanship school slot is empty, or the PC is willing to replace the existing school, Ito Itto-ryu license can be learned. If already holding 1 Swordsmanship school (not Ito Itto-ryu), the token is a setting resource to transmit to an heir or disciple (out-of-scenario value).
• Wakizashi "Kuihana": ordinary weapon grade, but a narrative symbol.
• Count 1 epic milestone (one of the advancement conditions, GM discretion). See Advancement Conditions §Rules.

On Defeat: Ittosai says, "Recover and return," and lets the PC live. The PC returns to the domain castle, recovers, and challenges again.

#Session 2 -- Nobutsuna (Backlash of No-Thought)

Location: ruins of Kamizumi Shrine. On moss-covered stone steps.

Entry Scene: Inside the ruined main hall. Nobutsuna sits in zazen with his sword placed beside his ankle. He opens his eyes and says:

"...Do you have recovery techniques? If so, seal them and come. If not, come."

Duel. One-on-one. The PC's recovery and defense resources proceed under automatic reversal.

Spoils on Victory:

• Shinkage-ryu Inheritance Token: transmission certificate. If the PC's Swordsmanship school slot is empty, or the PC is willing to replace the existing school, Yagyu Shinkage-ryu license can be learned. Otherwise, setting resource.
• Saketeki (酒滴) masterwork uchigatana: originally Nobutsuna's possession. PC gains it. Attack checks +1; on Critical Hit, enemy Defenseless for 1 round.
• Count 1 epic milestone.

#Session 3 -- Bokuden (The Unmoving Move)

Location: mountain altar. Circular stone space. Bokuden sits in zazen at the exact center of the altar.

Entry Scene: When the PC emerges from the forest into the clearing, Bokuden is already seated. Without opening his eyes:

"...Come close. I do not move. You must come and cut me."

Duel. One-on-one. Zone movement is possible, but Bokuden is immovable. Ranged weapons, ambush, and Hasso-tobi make the battle favorable.

Spoils on Victory:

• Katori Shinto-ryu Inheritance Token: Swordsmanship school slot replacement or setting resource.
• Ichino-Tachi masterwork tachi: attack checks +1, can use an additional technique +1 time on the first attack.
• Count 1 epic milestone.
• Special: immediately after victory, Bokuden's released last words -- "One who can realize the fight of no-victory has appeared." Grants the PC Three Ways and Six Hearts 'Life' 1-stage strengthening (additional bonus when converting to Tatsujin).

#Session 4 -- Kojiro (Dance of the Swallow)

Location: isolated plain by the Karanuki riverside. Reed beds and sandbar by the river.

Entry Scene: Kojiro stands on the sandbar, leaning on a nodachi like a staff. Long hair scatters in the wind.

"...There is no audience. A pity. Even so, I dance. Without the dance, I am no flower."

Duel. One-on-one. Since there is no audience, all Kojiro checks are -1 (PC advantage). However, the PC must recognize that this weakness comes from the PC's own judgment -- if the PC brought villagers or a squad along during the scenario, this modifier disappears.

Spoils on Victory:

• Ganryu Founder Transmission: Ganryu is a lost school not included among the wiki's 4 major Swordsmanship schools (Katori / Yagyu / Ito / Jigen). Inheriting it grants the right to found a new school -- the PC may register their Swordsmanship school as "Reconstructed Ganryu" (GM discretion). Replaces 1 existing school.
• Monohoshizao Greatsword: divine-item-grade nodachi. Reach bonus. If the [understanding] path is not met, treat as an ordinary nodachi (Principle 3 devotion technique rules).
• Count 1 epic milestone.

#Session 5 -- Entering Toyoura Abandoned Mountain Temple

Location: abandoned mountain temple at the summit of Toyoura Mountain. The mountain path grows narrower, and yin energy thickens in the surrounding air.

Entry Scene: Entrance to the mountain temple's main hall. When the PC opens the door, 5 summoning circles shine inside the main hall, and 4 are already extinguished. In the final summoning circle, Musashi is mid-rite, half-substantial. Beside him, Aburatsuka Genzo chants.

The moment the PC enters, Aburatsuka turns.

"...Ha. You made it here alive. You are real. To have defeated all those swordsmen -- you too are a kind of heroic spirit. A living heroic spirit.

Good. Make a choice. If you interrupt Musashi's summoning, destroy the rite, and kill me first -- Musashi will remain half-spirit and can no longer be released. He will wander this mountain forever. Or, if you do not interrupt the summoning and instead duel the completed Musashi -- I will not interfere with your battle. Whether you kill me first or kill Musashi first, you decide the order."

#Session 6 (Climax) -- Choice and Decisive Battle

Choice A -- Disrupt the Rite, Then Kill the Sorcerer -> Musashi Released

• PC destroys the summoning circle (3 Energy attack x 1 round, Defense 10, Wounds 3, no Energy (inactive structure)). Rite fails.
• Half-substantial Musashi enters a painless state -- because his spirit form is unstable, he is instead released. Musashi gives thanks and releases himself. "My 60 victories are meager before your victory. Please protect this age." As his spirit disperses, Musashi transmits Niten Ichi-ryu secret art "Five Rings Extremity" to the PC (as a letter or intuition). The PC gains the right to learn that secret art.
• Then the final battle with Aburatsuka. The main form is weak (Wounds 4). But he can resummon 2 already defeated heroic spirits in vengeance state.

Aburatsuka Final Battle (Choice A):

• Sorcerer main form. Lower Elite-grade. Defense 12.
• 2 resummoned heroic spirits (vengeance state, half Wounds, half techniques).
• The PC must process them in sequence. However, instead of the duel principle, group combat is allowed (heroic spirits under the sorcerer's command).
• On victory: count 1~2 completed combats + count 1 epic milestone (GM discretion). Gain Aburatsuka's Notes -- a forbidden book recording the whole fiend-class summoning rite (campaign inheritance at GM discretion).

Choice B -- Allow the Rite, Duel Musashi, Then Kill the Sorcerer

• Aburatsuka completes the summoning. Completed Musashi appears -- upper Elite-grade (Wounds 8). Aburatsuka watches without ritual interference.
• Musashi duel. The hardest duel. But the reward is also greatest.
• Afterward, kill Aburatsuka alone. No vengeance resummoning (resources spent).

Musashi Victory Spoils (Choice B):

• "Five Rings Extremity" secret art transmission: the ultimate art of Niten Ichi-ryu. If the PC is training in Ito Itto-ryu (two-sword direction) or chose to reconstruct Ganryu, this secret art can be used as a variant technique of the PC's own school. Other schools gain only the transmission manual and cannot actually activate it -- a setting resource that can be passed to a future inheritor of that school.
• Musashi no Tachi + Seijin Wakizashi: transmitted pair (male-female matched swords) -- Principle 3 Exception 2 applies, so they can be equipped together even without the Dual-Wield trait. See Principle 3.
• Musashi's release. His spirit fades with final words: "...You are the Musashi of this age."
• Count 1 completed combat + 1 epic milestone. Across this full scenario, the PC earns enough accumulation to justify 2 advancements from 8th dan to 10th dan (GM discretion; see Advancement Conditions §Rules). On reaching 10th dan, Renown Title choice is automatically unlocked (not conditional unlocking -- advancing to 10th dan itself grants Renown Title choice).

Choice C -- Strike the Sorcerer First (Extreme Difficulty)

• PC targets Aburatsuka before Musashi is completed.
• The 4 already summoned heroic spirits (vengeance state) intrude at the same time. PC faces 1 vs 5. The duel principle breaks.
• This is effectively a failure path. On an extreme victory, gain the full spoils pool + multiple completed-combat counts + multiple epic milestone counts (several advancements possible at GM discretion). But this is almost impossible in practice -- only with extreme campaign builds and extreme luck.

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#Step-by-Step Progression Guide

#Prologue Progression Guide -- Request and Map

• Success Branch: PC accepts the recommended order -> gradual difficulty curve remains.
• Failure Branch: PC tries to strike Musashi or the sorcerer first -> GM blocks gently once with "the rite is incomplete, so the site cannot be reached." If the PC tries to bypass 3 times, move to Choice C route.
• GM Control: Preparing physical pins for the five points on the map doubles immersion. Repeatedly emphasize the PC's solitary nature through dialogue tone.

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#Session 1 Progression Guide -- Ittosai (Hungry Two-Blade Sword)

• Success Branch: victory + Kuihana wakizashi + Ito Itto-ryu Inheritance Token + 1 epic milestone.
• Failure Branch: Ittosai lets the PC live. After returning to the domain castle, rematch (+1 Wound strengthened). 3 consecutive defeats cause scenario failure.
• GM Control: Put the weight of "your blood is warm" onto the first heroic spirit to set the mood. If the PC is a defensive build, this session is easy -- hint that this ease is a trick.

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#Session 2 Progression Guide -- Nobutsuna (Backlash of No-Thought)

• Success Branch: victory + Saketeki masterwork uchigatana + Shinkage-ryu token + 1 epic milestone.
• Failure Branch: recovery-dependent PCs are likely to fail the first attempt. On rematch, recommend sealing the recovery skill itself and re-entering.
• GM Control: Deliver the Backlash mechanism as a warning, not a rules lecture. Dramatically present the first moment the PC tries self-healing -- the blood spreads backward.

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#Session 3 Progression Guide -- Bokuden (The Unmoving Move)

• Success Branch: victory + Ichino-Tachi masterwork tachi + Katori Shinto-ryu token + 1 epic milestone + Three Ways and Six Hearts 'Life' 1-stage strengthening.
• Failure Branch: a pure melee PC must prepare ranged options (teppo, ambush, school secret art) for the rematch.
• GM Control: Keep Bokuden's Zen exchanges short. Do not let him talk much. Make silence itself threatening.

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#Session 4 Progression Guide -- Kojiro (Dance of the Swallow)

• Success Branch: victory + Monohoshizao greatsword + right to reconstruct Ganryu + 1 epic milestone.
• Failure Branch: if an audience was brought, Kekka modifier -1 disappears -> difficulty spikes. Rematch must be solo.
• GM Control: Maintain Kojiro's aesthetic provocation. Repeat the metaphor of dance. Whenever the PC succeeds at defense or evasion, describe the loneliness of a "dance without an audience."

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#Session 5 Progression Guide -- Entering Toyoura Abandoned Mountain Temple

• Success Branch: choose A or B -> formal Session 6 climax. Duel principle preserved.
• Failure Branch: choose C -> 4 heroic spirits in vengeance state immediately intrude. Effectively an extreme failure path.
• GM Control: Aburatsuka's speech is polite but hypocritical. The arrogance of an artist. Make the PC want to cut him first.

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#Session 6 Climax Progression Guide -- Choice and Decisive Battle

• Success Branch (A): Musashi self-release + Five Rings Extremity transmission manual + sorcerer's forbidden book. Count multiple epic milestones.
• Success Branch (B): defeat Musashi + matched pair swords + Five Rings Extremity secret art (activates if school requirements are met). Add 1 epic milestone.
• Failure Branch: on defeat, pause the scenario -- keep a long-term rematch hook in the campaign. On total failure, massacres spread through Kagura Domain.
• GM Control: A is victory of wisdom, B is victory of the sword. Both branches end as "legend of the age." Do not belittle either. The GM adjusts advancement counts to the PC's growth curve -- arrange it so that reaching 10th dan feels natural by the rules.

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#Scenario Reward Summary

#Spoils (Class-Independent)

• 4 masterwork weapons: Kuihana wakizashi, Saketeki masterwork uchigatana, Ichino-Tachi masterwork tachi, Monohoshizao greatsword (divine-item grade).
• Matched pair swords: Musashi no Tachi + Seijin Wakizashi (gained in Choice B/C. Principle 3 Exception 2 applies, so they can be equipped together even without the Dual-Wield trait).
• Secret-art transmission manual "Five Rings Extremity": gained in Choice B/C. Actual activation is limited to Niten Ichi-ryu-lineage school trainees.
• Sorcerer's forbidden book (Choice A): fiend-class summoning rite archive. For campaign inheritance.

#School Inheritance Tokens (5 Types, Setting Resource)

Rules Note: One character can train only 1 school per skill (co-04-03-schools.md:38). Of these 5 tokens, the PC can register at most 1 Swordsmanship school as their own. The remaining 4 tokens remain as transmissions to NPC successors, setting political resources, or options that can replace an existing school. The intent of this scenario is not "stack 5 schools," but a narrative device: "the 5 legendary sword traditions converge into the hands of one PC, who must choose which one to carry forward."

#Advancement and Growth Effects (Rules-Compatible Wording)

Konsei Reiyotan has no XP point-accumulation system. Advancement is judged by the GM from one of the following conditions: complete 2~3 combats / narrative milestone / realization through skill use / GM milestone declaration. This scenario contributes to advancement conditions as follows:

By accumulated basis, 2 advancements for a PC starting at 8th dan (8->9->10th dan) can be fully justified. On reaching 10th dan, automatically choose 1 of the 3 Renown Title paths (co-04-05-prestige.md:63). A separate unlock-condition concept does not exist in the rules.

#Even Advancement Growth Values (9th Dan -> 10th Dan)

On advancing to 10th dan, apply standard even-dan fundamental growth:

• Attribute +1 (observe maximum +3 cap).
• Skill +2 points freely distributed (follow Licensed 3-point and Master 4-point slot rules, and class Master cap of 6).

This scenario especially makes it worthwhile to spend Swordsmanship, Fighting Spirit, and Fate skill points (reflecting the heroic spirits' techniques).

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#GM Tips

#Psychology of 1-Person Play

1-person play is an intimate format where PC and GM are the only two people at the table. Each heroic spirit's portrayal is the scenario's greatest asset. Clearly distinguish each swordsman's speech, philosophy, and fighting style.

• Ittosai: short and blunt. "Your blood is warm."
• Nobutsuna: gentle, philosophical. "Gather your spirit. When you empty yourself, I see."
• Bokuden: still, Zen exchange. "How can not moving be anything other than a fight?"
• Kojiro: provocative, aesthetic. "Watch my dance. You are audience and partner."
• Musashi: overwhelming, concise. "Are you the last enemy I met, or the first?"

#Recovery Between Sessions -- Tension in the Gap

In 1-person play, make full use of the Return Phase between sessions. The PC speaks with NPCs (domain lord, physician, school master) at the domain castle while preparing for the next duel. This rest time amplifies tension. NPC roles:

• Domain lord -- political pressure. If one heroic spirit is not handled, a neighboring village is massacred.
• Physician -- the PC's wounds and price. "This sword cuts you little by little every day."
• School master -- hints about the next heroic spirit's weakness. But incomplete.

#Giving Hints Manually

The GM should not directly explain each heroic spirit's fiend-corruption weakness. Lead the PC to discover it during combat:

• Ittosai: after the PC completes the first 3 rounds without bleeding, the moment Ittosai shows Wounds -1.
• Nobutsuna: the moment the PC tries self-healing and is reversed.
• Bokuden: the moment the PC leaves the zone and Bokuden becomes powerless.
• Kojiro: the moment Kojiro's check actually misses because there is no audience.
• Musashi: the moment Musashi self-destructs when the PC endures a frenzy round by avoiding hits.

#Narrative of Failure

If the PC loses 2 times to one heroic spirit, then wins on the 3rd challenge, that becomes the scenario's emotional climax. A much better memory than a simple defeat. Avoid excessive walls with difficulty adjustment, but encourage the first defeat.

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#Related Items

• co-09-05. Class Solo Scenarios -- basic principles of 1-person play.
• co-09-09. Onryo of the Minamoto House -- single heroic-spirit duel pattern (for prior-step learning).
• Episode 15: Battle of the Hannyakai -- combat demonstrations for 4 fiend classes.
• Heroic Spirit Class -- heroic spirit mechanism rules.
• Fiend Class Group -- range 04-07-20~31.
• Core Interpretive Principles -- directly applies Principle 2 (unit autonomy, spirit duel cap) and Principle 3 (dual-wielding, paired transmissions, heroic spirit automatic resonance).
• Masterwork Catalog -- for registering Ichino-Tachi, Saketeki, and Monohoshizao (new additions at GM discretion).
• Renown Titles -- completing this scenario can serve as the narrative milestone for reaching 10th dan and choosing a Renown Title.

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The 5 swordsmen never met each other across the ages. Only one PC gathers them into one place. And after this scenario, that PC is no longer "just a swordsman." Bearing the secret arts of 5 schools and having released 5 revived heroic spirits, they begin to realize that they are the new legend of Sengoku.