#Hyakka Yoran (百家繚亂) — Expansion Vol. 2 Root Index

Contents

"The hundred schools(百家) bloom in riotous profusion(繚亂); the path of a single blade splits into a hundred branches and returns again to one."

A compendium of alternate, optional, and experimental rules layered on top of the core Konsei Reiyotan + the 1st expansion Drift of the Spirit Realm. It corresponds to D&D Unearthed Arcana.

Campaign Module / Data Catalog — optional material. The alternate techniques, schools, spells, Divine Treasures, yoma, and squads of ex2 are not core rules but per-section On/Off optional material. On conflict with co, co takes priority, and the rules of any section you did not select are treated as not existing at the table.

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#Meta Card

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#Production and AI Notice

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#Section Table of Contents

#Basic Reinforcement (01~03)

• 01 Class Alternate Techniques — 33 classes × 5 dan = ~165 alternate techniques
• 02 Alternate Backgrounds — branches of the 12 core backgrounds + new backgrounds
• 03 Additional General Techniques — ~15 new general techniques

#Great School Expansion (10~21) ★ the heart of this expansion

• 10 Swordsmanship Schools — Tennen Rishin, Hokushin Itto, Joseon Sebeop, Liechtenauer, and others
• 11 Spearmanship Schools — Joseon Spear Method, Pike Square, Landsknecht, and others
• 12 Archery and Gunnery Schools — Joseon Bow, Mongol Knight, English Longbow, and others
• 13 Unarmed Combat Schools — Shaolin, Eighteen Dragon-Subduing Palms, Taekkyon, Pankration, and others
• 14 Ninjutsu Schools — Negoro, Fuma, Hashashin, and others
• 15 Horsemanship Schools (new) — Mongol, Cossack, Saracen cavalry
• 16 Mobility Schools (new) — Footwork, Lightness Skill, Riding, Navigation, Infiltration, Disguise
• 17 Scouting Schools (new) — Scouting, Survival, Geography, Perception, Disable, Herbalism
• 18 Command Schools (new) — Military Science, Negotiation, Intimidation, Bribery, Agitation, Deceit
• 19 Mystical Schools — expansion of Sorcery, Exorcism, Medicine + new Barrier, Prophecy, Poisoncraft
• 20 Dedicated Disciplines (new · not schools) — Fighting Spirit, Speed, Hardiness, Stratagem, Bearing, Fortune (the 6 core-exclusive skills)
• 21 Cross-Cultural Index — reclassification of schools by nation, era, and play type

#Operational Modules (25~60)

• 25 Famous Squads — wargame-style honored regiments. Unique aptitudes and tactics
• 30 Alternate Rules — alternates for initiative, injury, morale, side screen, and dan promotion
• 35 Sorcery Spell System — spell-slot-style Sorcery and Exorcism
• 40 Props — consumables, tools, new masterworks
• 45 Foreign Divine Treasures — Excalibur, Durendal, Gungnir, and others
• 50 Sengoku Tatsujin Tournament Trial Scenarios — 5 short pieces
• 55 Western, Chinese, and OSR Yoma Conversion — yoma template conversion
• 60 House Rule Guide — variations of tone, party, and time

#Tools and Appendix (80~99)

• 80 GM Tools — bracket tables, spell sheets, custom templates
• 99 Appendix — full index, glossary, IP safety

#Version

• ex2-VERSION — current edition of this expansion
• ex2-VERSION — current version information

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#Connections To Other Volumes

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#Recommended Reading Order

#GM First Review

1. 00-01 about — philosophy (10 min)
2. 00-02 module-selector — choosing modules that fit your table (15 min)
3. 00-03 compatibility — compatibility with the core and the 1st expansion (5 min)
4. Read 1~2 section indexes of interest carefully

#Trying Just One Module

• each section index → the relevant data file → the On/Off checklist of 30-00-index.md

#Full Adoption

#Recommended Entry Points by Campaign Tone

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#The Identity of This Expansion

This expansion is a compendium not of "one right answer" but of "a hundred possibilities." According to the campaign tone, culture, time, and taste of the PCs and GM, you select modules freely to use.

• No core modification — every module of this expansion operates on top of the core. The core original is left untouched.
• Independent module On/Off — use just one module if you like, or use them all.
• Emphasis on foreign types — a school type newly established in this expansion. Bringing the martial valor and mysticism of cultures outside Japan into the core world.
• GM-custom friendly — many custom templates in 21-05·25-10·60-08·80-04.
• 1st-expansion compatible — the 99-05 compatibility table. Freely introduce this expansion's modules into a 1st-expansion Drift of the Spirit Realm campaign.

This expansion is not merely a collection of data — it is a tool that widens the campaign possibilities of an era. A single sword meets a hundred hands and makes a hundred fates.

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"Every school is, in the end, but another name for one single art. Yet without a name, no art can stand." — a passage from the preface

"Hyakka Yoran — when the hundred branches of the path converge in the hand of one swordsman, an era is completed."