#1st·2nd Expansion Interaction Table

Contents

How to insert this expansion's modules into the 1st-expansion "Spirit Realm Drift" campaign. Or how to use 1st-expansion elements in a this-expansion campaign.

#§ 1st-Expansion Campaign + This-Expansion Module Recommendations

#This-Expansion Modules → 1st Spirit Realm Campaign

This-Expansion Module	1st Campaign Use
10–15 Martial Schools	a Spirit Realm Drift PC freely chooses core + this-expansion schools (at campaign start)
16-04 Navigation Schools	Spirit Realm navigation is possible (compatible with the 1st Spirit Realm environment)
17-02-04 Spirit Realm Adaptation (Survival School)	directly compatible with the 1st campaign — Hardiness in Spirit Realm marches
17-05-04 Spirit Realm Seal Disable (Disable School)	directly compatible with the 1st campaign — undo Spirit Realm seals
19-04 Barrier Schools	policy: this-expansion Barriers are in Wounds units (combat/short-term), while 1st Domain Barriers are in Barrier HP 100 units (domain/campaign permanent) — scale separation. Only the 35-15-15 9-dan permanent Barrier is directly compatible at the 1st Domain Barrier grade. See 00-05 §11.
20 Dedicated Disciplines	strengthen 1st campaign PC depth
25-08 Spirit Realm·Otherworld Mercenary Squads	directly compatible with the 1st campaign — mobilize Spirit Realm mercenaries
30-02 Variant B Long-Term Recovery	compatible with the 1st interlude system
30-03 Variant A Squad-Type Morale	directly compatible with the 1st morale system
35 Spell System	a 1st onmyoji PC can operate spells
45-foreign-relics	foreign Divine Treasures are possible as Spirit Realm rewards
55-beast-conversion	mix 1st Spirit Realm yoma + this-expansion conversion yoma
60-house-rules	tone·structure variation guide for the 1st campaign

#1st-Expansion Elements → This-Expansion Campaign

1st-Expansion Element	This-Expansion Campaign Use
1st 22 Hell Schools	mix this-expansion schools + hell schools
1st 99-01 Hell Yoma	intruding yoma in this-expansion scenarios (50-*)
1st 99-02 Spirit Realm Relics	this-expansion scenario rewards
1st 02-npc Sheet Patterns	this-expansion 50-tournament NPC sheets (reference)
1st 01-06 Morale System	4-axis policy: core = Cohesion only / 1st = domain morale 0–10 / this expansion = 30-03 Variant A (squad morale) or Variant B (personal morale/madness) / madness·trauma = 30-10 Grimdark dependent. See 00-05 §12.
1st 01-02 Barrier System	policy: 1st Domain Barrier HP 100 ↔ this-expansion Barrier (Wounds units) scale separation. Only the 35-15-15 9-dan permanent Barrier is directly compatible with the 1st Domain Barrier.
1st 01-07 Squad 2-Slot Limit	coexists with this-expansion 25-famous-squads

#§ Compatible Campaign Scenario Examples

#A: Spirit Realm + Martial School Campaign

The PCs are 1st Spirit Realm Drift PCs. They freely choose this-expansion martial schools (10·11·12·13·14·15). They exert martial skill even in the Spirit Realm.

#B: This-Expansion 50-tournament + Spirit Realm Branch

The PCs are running this-expansion Tatsujin Tournament chapters 1–5 when a Spirit Realm incident occurs (yoma intrusion). It branches via 1st-expansion Spirit Realm mechanics.

#C: Onmyoji·Barrier Campaign

The PC is an onmyoji. They integrate this-expansion 19-01·19-02 mystical schools + 35 spells + the 1st Barrier HP system into a unified operation.

#D: Majin + Shadow Tournament + 1st Majin

A PC or enemy integrates the core Majin 12 jobs + 1st Majin + this-expansion 50-05 Shadow Tournament.

#§ Collision Avoidance

#Cautions When Using 1st + This Expansion Simultaneously

Morale system: when introducing 1st 01-06 + this-expansion 30-03 simultaneously, choose only one.
Barrier HP: 1st 01-02 + this-expansion 19-04 + 35-15 — Barrier HP takes the 1st system as priority.
Squad slots: 1st 01-07 domain 2 slots + this-expansion 25-famous-squads — a campaign outside the domain has no slot limit.
PC dan rank: this-expansion 50-tournament recommends 7-dan vs the 1st Spirit Realm Drift (dan rank can be adjusted).

#Campaign Compatibility Checklist

[ ] only 1 morale system (1st or this-expansion 30-03)
[ ] Barrier HP takes the 1st system as priority
[ ] squad slots apply only to the 1st domain campaign
[ ] adjust PC dan rank to fit the campaign tone
[ ] prior agreement on PC consent

"When two expansions gather into one campaign, the depth of three expansions is made."