Akari, KyÅko and Yui reminisce their childhood days when they were fighting a certain pink-haired girl. Later, a bump on the head causes KyÅko to become uncharacteristically polite. The others soon begin to miss the old KyÅko, especially when KyÅko plans to disband the Amusement Club, so they decide to hit her on the head again to return her to normal.