Casus belli · Subjugation

Establish Sōryō Administration

All Under Heaven

Establish Sōryō Administration is a casus belli in Crusader Kings III (subjugation). If the attacker wins: The attacker will replace the defender as ruler of … and imprison all defenders. If the defender wins: The defender, and all Bloc members, will adopt Japan Feudal Government Government and imprison all attackers. The war goal is worth 1% war score. It needs All Under Heaven. Patch 1.20.0.3, from game/common/casus_belli_types/10_tgp_japan_wars.txt.

Quick answers (2)

What do you get for winning a Establish Sōryō Administration war in CK3?: The attacker will replace the defender as ruler of … and imprison all defenders (patch 1.20.0.3).
What happens on a white peace?: The defender will remain Ritsuryō.

How the war ends

Attacker wins

The attacker will replace the defender as ruler of … and imprison all defenders.

White peace

The defender will remain Ritsuryō.

Defender wins

The defender, and all Bloc members, will adopt Japan Feudal Government Government and imprison all attackers.

If the war becomes invalid

Establish Sōryō Administration was invalidated

Who can declare it

The game shows no text of its own for these conditions; the script is below.

Every subjugation war (the group's allowed_for_character) (13 lines of game script)

herders_and_tributary_constraints = yes
pam_personal_pacifism_offensive_war_ban_trigger = yes
tgp_dynastic_cycle_offensive_wars_ban_trigger = yes
tgp_war_ban_all_ministers_trigger = yes
OR = {
	NOT = {
		government_has_flag = government_is_theocracy
	}
	AND = {
		government_has_flag = government_is_theocracy
		has_variable = koh_subjugation_cb_allowed
	}
}

As written in game/common/casus_belli_groups/00_casus_belli_groups.txt.

Attacker (allowed_for_character) (2 lines of game script)

has_tgp_dlc_trigger = yes
always = no

As written in game/common/casus_belli_types/10_tgp_japan_wars.txt.

Source: game/common/casus_belli_types/10_tgp_japan_wars.txt and the English localisation, Crusader Kings III 1.20.0.3. “The attacker”, “the defender” stand where the game names the character; “…” marks other words it fills in during play.