Will the AI accept Mend Broken House Relations?

Yes: it is accepted automatically.

Interaction · Diplomatic actions

Mend Broken House Relations

variesGold

variesInfluence

variesPrestigeAccepted automatically

Improve House Relations with a hostile House before they abandon the Bloc

What you need

You

To send it

Is not at war with the target
… must be House Head of a Noble Family Challenge your House Head for leadership, or use the Create Cadet Branch Decision
House Relations must be below Neutral

To see it in the menu

Your dynasty: The Dynasty has the Etiquette Legacy
If played by the AI:
- Your Government uses Blocs
- Your top liege: Government uses Blocs
confederation.leading_house ?= house
If
a check the game hides
Then
- Your house: Has the house check as house head
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
One of these
- Your Government is Ritsuryō
- or
  Your Government is Sōryō

The character you target

To send it

… must be House Head of a Noble Family Challenge your House Head for leadership, or use the Create Cadet Branch Decision

To see it in the menu

house.house_confederation ?= scope:actor.house.house_confederation
Is not of the same house as you

Mend Broken House Relations is a diplomatic character interaction in Crusader Kings III. You need: Is not at war with the target and House Relations must be below Neutral. Accepted automatically. It costs Gold (varies), Influence (varies), Prestige (varies). Patch 1.20.1.2, from game/common/character_interactions/10_tgp_japan_interactions.txt.

for a guide, post or blog

Quick answers (3)

What are the requirements for Mend Broken House Relations in CK3?: You: Is not at war with the target and House Relations must be below Neutral. (patch 1.20.1.2)
Will the AI accept Mend Broken House Relations?: Yes: it is accepted automatically.
How much does Mend Broken House Relations cost?: Gold (varies), 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

Your house:
- If
  a check the game hides
  Then
  impact_house_relation = { target = scope:other_house steps = scope:steps description = house_relation_reason_perk_interaction_desc }
If
- Your house › Any house relation:
  Any relation house:
  has_house_relation_level = quarrel
Then
- House Relations with the … will improve by +1.2 (current relation: Quarreling)
Else if
- Your house › Any house relation:
  Any relation house:
  has_house_relation_level = rivalry
Then
- House Relations with the … will improve by +1.2 (current relation: Rivalry)
Otherwise
- House Relations with the … will improve by +1.2 (current relation: Feuding)

• 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) (20 lines of game script)

is_available = exists = confederation
dynasty ?= {
	has_dynasty_perk = tgp_japan_legacy_3
}
trigger_if = {
	limit = {
		is_ai = yes
	}
	tgp_uses_house_blocs_trigger = yes
}
confederation.leading_house ?= house
is_house_head = yes
tgp_house_bloc_interaction_valid_trigger = yes
government_is_japanese_trigger = yes
is_shown = scope:recipient = {
	house.house_confederation ?= scope:actor.house.house_confederation
	NOT = {
		house ?= scope:actor.house
	}
}

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

Can be sent when (is_valid…) (24 lines of game script)

scope:actor = {
	NOT = {
		is_at_war_with = scope:recipient
	}
	tgp_house_bloc_interaction_valid_showing_failures_trigger = yes
	custom_tooltip = {
		text = has_to_have_negative_house_relations_tt
		house = {
			any_house_relation = {
				OR = {
					has_house_relation_level = quarrel
					has_house_relation_level = rivalry
					has_house_relation_level = feud
				}
				any_relation_house = {
					this = scope:recipient.house
				}
			}
		}
	}
}
scope:recipient = {
	tgp_house_bloc_interaction_valid_showing_failures_trigger = yes
}

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

Effects (on_send, on_accept, on_decline) (39 lines of game script)

on_accept = scope:actor.house = {
	change_house_relation_effect = {
		HOUSE = scope:recipient.house
		VALUE = house_relation_improve_major_value
		REASON = perk_interaction
		CHAR = scope:actor
		TARGET_CHAR = scope:recipient
		TITLE = scope:dummy_gender
	}
}
if = {
	limit = {
		scope:actor.house = {
			any_house_relation = {
				any_relation_house = {
					this = scope:recipient.house
				}
				has_house_relation_level = quarrel
			}
		}
	}
	custom_tooltip = house_relation_perk_interaction_quarrel_effect
}
else_if = {
	limit = {
		scope:actor.house = {
			any_house_relation = {
				any_relation_house = {
					this = scope:recipient.house
				}
				has_house_relation_level = rivalry
			}
		}
	}
	custom_tooltip = house_relation_perk_interaction_rivalry_effect
}
else = {
	custom_tooltip = house_relation_perk_interaction_feud_effect
}

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

Category: Diplomatic actions
Cost: Gold: varies
Cost: Influence: varies
Cost: Prestige: varies
Cooldown: 0 months
In the menu: main list
ID: improve_house_relation_in_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.