Bossun and Himeko's personalities are still switched on the school ski trip, so imagine the complications when it's time to change clothes or take a bath! And complicating matters is Saaya, who has a crush on Bossun but doesn't know that he's effectively Himeko right now!
One day without should be fine.
No me importa quedarme 
sin bañarme por un día.
Um dia sem tomar não tem problema.