#What This Supplement Is

Contents

Canon — within fc01. This document defines why fc01 handles "real gods" as a separate system, and the exact boundaries within which the Divinity (神性) rules are used.

#Scent — A Small Overlay Plate

This supplement is a single small plate. A thin plate laid lightly over the main edition. It is light enough that, whatever is laid upon it, it never crushes or breaks the main edition.

Yet whoever steps onto it knows that they are a god. The god who lingers in the corner of a kitchen and the god at the very center of Ise Grand Shrine both stand upon the same plate. The plate is the same size; only the work they do in their own place differs.

"A small overlay plate that fills the area where one is a god, yet expression by class alone falls short."

#Divine Beings Already Exist in the Main Edition

co (the Konsei Reiyotan (混世霊妖譚) main edition) already has ample channels for handling transcendent beings.

Arahitogami (現人神) — "a god who has taken a body as a person." A 10-dan class line.
Tatarigami (祟神) — a being whose grudge, greed, or attachment twisted into divinity. An angry god.
Celestial (天人) — one born of the heavens, or who conveys the will of heaven. A 10-dan class line.
Heroic Spirit (英霊) — a state in which the will of the dead remains and holds power. (Some that are enshrined are elevated to gods.)
Mythic-class yoma — beings the size of a "calamity within a tale," like Yamata no Orochi, Jormungandr, Fenrir.

fc01 does not replace any of these. When a god takes the stage of a campaign as a PC or moves as an NPC, the proper path is to build it, as before, with the arahitogami / Tatarigami classes.

#So Why Is a Separate Rule Needed?

Three kinds of gods are difficult to handle with the main-edition classes alone:

Small gods who govern only an extremely narrow area — the god who governs the fire of a kitchen, the dosojin who dwells in the stone pillar at the village entrance, the kamuy in the corner of a shrine. These have no "10-dan-worth of personality." Building them as arahitogami is, if anything, excessive.

A case where a "divine attribute" is laid onto a character who already has a distinct separate identity — for example, one who is actually the village ujigami (land god) yet has lived a whole life as a Commoner old woman. A samurai onto whom a fragment of Hachiman's wrath has descended. Such a figure should keep the class as is, and have only the authority as a god laid on top.

Gods that exist only as background — a guardian deity sealed in a shrine and unmoving, a fertility god who wakes only in season. Cases that need no detailed personality data and require only "how strong a god it is."

For these three cases, one needs a single value orthogonal to class. That value is Divinity (神性).

#Boundaries of Use — The Separate-Necessity Principle (Canon)

When a "god" acts as a directly moving agent in the game, use the arahitogami / Tatarigami classes. This is co's proper channel.

Divinity (神性) is used only in the following cases:

Case	Example
When laying a divine attribute onto a non-arahitogami, non-Tatarigami class	A Commoner old woman who is actually the ujigami. A fragment of Hachiman dwelling in a samurai.
When a god remains as background or symbol and a class sheet is less necessary	A shrine-sealed god, a seasonal fertility god.
When the nature does not fit being built as arahitogami or Tatarigami	A kamuy with scant anthropomorphism, a god with an extremely narrow domain.

Conversely, when a PC plays a god, or an NPC god moves as the agent of the story, arahitogami / Tatarigami take priority. If needed, Divinity can be further layered on top of that — but the class comes first.

#What This Supplement Lets You Do

From the corner god of a shrine to Amaterasu Omikami, you can layer them all with the same 5-rank system.
You can express an Imperial-God-class being without exceeding 10-dan (because Divinity does not replace dan but runs orthogonal to it).
You can immediately use the data cards of the major gods of Japanese mythology.
You can introduce outside gods of the Greek, Norse, Indian, and Lovecraftian lines in a limited way.
You can set out from the scenario seeds entangled with each god.

#What This Supplement Cannot Do

Change the main-edition rules — co Canon is immutable.
Make a god omnipotent — however high the Divinity, outside the domain it is an ordinary character.
Stat blocks for mythic-class yoma — Jormungandr, Yamata no Orochi, and the like are a set with a scenario, not "a single piece of data." See fc01-99-02-not-in-scope.md.

#One-Paragraph Summary

Shinseiki is a small overlay plate that fills the area where one "is a god, yet expression by class alone falls short." Its size is small, its authority is narrow, but in return it is distinct within that narrow scope. Even Amaterasu is Amaterasu only within the domain of the sun, the imperial house, and ancestral gods, and outside it she descends to merely "the personality of a 10-dan celestial."