During a swimmining lesson

Every so often, Aoi organised a swimming lesson for the girls in her class, however, due to the rules no one had to show up if they didn't want to but today was different.

Aoi had gotten permission from the principal that everyone had to attend.

This is where Chihiro's dilemma started, he never went to one of Aoi's lessons because everyone thought he was a girl and not a boy, so getting changed in the girls' locker room and wearing a tight girls swimsuit would cause some issues.

But he couldn't reject it today.

Chihiro was stood in front of the door to the girls' locker room, knowing that he'd be punished if he didn't go in but would get an even bigger punishment if his secret was exposed.

Chihiro braced himself and forced his eyes shut as he pushed his way into the locker room.