Indecision / Collarbone / Undefeated / Memory / Surprise Attack

Because Aihara has a loose baby tooth, she asks Ryōta to stay after school and uses him to help pull it out. During school, in order to shift the spotlight from himself, Ryōta claims that guys care about collarbones and not breasts. After losing the match against Natsumi during recess, Ryōta is forced to accompany her as punishment to run an errand during which they get locked in the P.E. supply closet. Megumi is worried about gaining three kilograms due to an incorrectly balanced scale. Chika tries to trick Ryōta into kissing her but is interrupted.