Will the AI accept Remove House from Bloc?

Yes: it is accepted automatically.

Interaction · Diplomatic actions

Remove House from Bloc

variesInfluence

variesPrestigeAccepted automatically

Eject the recipient's House from the …

What you need

You

To send it

… must be House Head of a Noble Family Challenge your House Head for leadership, or use the Create Cadet Branch Decision
Your House must be leading your Bloc
Must not be in the same War

To see it in the menu

Is a ruler
Your Government uses Blocs
Your top liege: Government uses Blocs
Highest held Title is at least County Rank
Your top liege:
- Government uses Blocs
- Their top liege: Government uses Blocs
house.house_confederation.leading_house ?= house
house.house_head ?= this
Your house is not the target’s
scope:recipient.house.house_confederation ?= scope:actor.house.house_confederation

The character you target

… must be House Head of a Noble Family Challenge your House Head for leadership, or use the Create Cadet Branch Decision
Does not have a usable Hook on you

Remove House from Bloc is a diplomatic character interaction in Crusader Kings III. You need: Your House must be leading your Bloc and Must not be in the same War. The character you target needs: Does not have a usable Hook on you. Accepted automatically. It costs Influence (varies), Prestige (varies). Patch 1.20.1.2, from game/common/character_interactions/10_tgp_japan_interactions.txt.

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Quick answers (3)

What are the requirements for Remove House from Bloc in CK3?: You: Your House must be leading your Bloc and Must not be in the same War. The character you target: Does not have a usable Hook on you. (patch 1.20.1.2)
Will the AI accept Remove House from Bloc?: Yes: it is accepted automatically.
How much does Remove House from Bloc cost?: Influence (varies), Prestige (varies) (patch 1.20.1.2).

Will they accept?

The other character has no choice: the game accepts it automatically.

What happens

Effects

The target’s house:
- house_confederation ?= { … }
- If
  scope:leaver.house_head.house.house_confederation ?= scope:bloc
  Then
  If
  The bloc: Confederation member house (at most 2):
  Then
  House … will leave the …
  The … will disband
  Else if
  The leader is not the leaver
  Then
  House … will leave the … and may not rejoin for 5 years
  If
  The leader is the leaver
  Then
  The bloc › One confederation member house, picked in order › The bloc temp:
  tgp_set_house_bloc_leading_house_effect = { LEADER = scope:new_leader_temp }
  Otherwise
  If
  flag:no = flag:yes
  Then
  The leader:
  Their house head:
  If
  Has the opinion “Joined House Bloc”
  Then
  remove_opinion = { target = scope:leaver.house_head modifier = joined_house_bloc_opinion }
  Opinion: Left House Bloc (-15)
  If
  a check the game hides
  Then
  impact_house_relation = { target = scope:other_house steps = scope:steps description = house_relation_reason_left_bloc_desc }
  If
  flag:yes = flag:yes
  Then
  The leaver’s house head: All … House members gain a one-way Truce with all other Bloc members for 5 years
- Their house head › If played by the AI: Opinion: Removed from House Bloc (-25)
- If
  a check the game hides
  Then
  impact_house_relation = { target = scope:other_house steps = scope:steps description = house_relation_reason_kicked_from_bloc_desc }

• the game's own tooltip text · ◦ our reading of the script line · code the script where neither exists

Who can use it and sees it (is_available, is_shown) (7 lines of game script)

is_available = tgp_house_bloc_interaction_valid_trigger = yes
house.house_confederation.leading_house ?= house
house.house_head ?= this
is_shown = exists = scope:actor.house
exists = scope:recipient.house
scope:actor.house != scope:recipient.house
scope:recipient.house.house_confederation ?= scope:actor.house.house_confederation

As written in game/common/character_interactions/10_tgp_japan_interactions.txt.

Can be sent when (is_valid…) (23 lines of game script)

scope:actor = {
	tgp_house_bloc_interaction_valid_showing_failures_trigger = yes
	custom_tooltip = {
		text = must_be_leader_of_bloc_trigger
		confederation.leading_house ?= house
	}
	custom_tooltip = {
		text = must_not_be_involved_in_war_together_trigger
		NOT = {
			any_character_war = {
				any_war_participant = {
					this = scope:recipient
				}
			}
		}
	}
}
scope:recipient = {
	tgp_house_bloc_interaction_valid_showing_failures_trigger = yes
	NOT = {
		has_usable_hook = scope:actor
	}
}

As written in game/common/character_interactions/10_tgp_japan_interactions.txt.

Effects (on_send, on_accept, on_decline) (32 lines of game script)

on_accept = scope:recipient.house = {
	set_variable = {
		name = bloc_leaving_reason
		value = flag:reason_kicked
		days = 4
	}
	tgp_leave_house_bloc_effect = {
		OPINION = flag:no
		TRUCE = flag:yes
	}
	house_head ?= {
		if = {
			limit = {
				is_ai = yes
				exists = scope:leader.house_head
			}
			add_opinion = {
				modifier = kicked_from_house_bloc_opinion
				target = scope:leader.house_head
				opinion = -25
			}
		}
	}
	change_house_relation_effect = {
		HOUSE = scope:leaver
		VALUE = house_relation_damage_major_value
		REASON = kicked_from_bloc
		CHAR = scope:actor
		TARGET_CHAR = scope:recipient
		TITLE = scope:dummy_gender
	}
}

As written in game/common/character_interactions/10_tgp_japan_interactions.txt.

Category: Diplomatic actions
Cost: Influence: varies
Cost: Prestige: varies
Cooldown: 3 months
In the menu: main list
ID: kick_from_house_bloc_interaction

Source: game/common/character_interactions/10_tgp_japan_interactions.txt and the English localisation, Crusader Kings III 1.20.1.2. “You” is the character who sends it (scope:actor, or a puppet acting for you); “the character you target” is the recipient. “…” marks words the game fills in at play time (a name, a title).