Another Demon Slayer appears! But she's not looking for peace with the demonkind. Even worse, she's claiming to be his…fiancé?! Is she here for love or war?

Kuesu is determined to bind her family with Yuuto's. When he continues to refuse her, what drastic measures will she take?

Himari takes time to recover after the battle with Kuesu. But her secret remedy has her acting quite catty! Not wanting Himari to be harmed again, Yuuto decides to take the matter into his own hands and confronts Kuesu.