On a school trip, she gets carried away and makes a thrill visit a girl's room! In the hidden futon from the patrol teacher, she unexpectedly comes into contact with her beloved guy! A chain of erotic atmospheres leads to a complete close-up of the one-night stand-off that spreads!

The fun school trip is not just about sightseeing! When you sneak into the girls' room at night and dive into the futon, the girl you like will be greeted by wearing a more yukata than usual! They are both excited! They are losing their rationality and begin having sex! Although they are hiding in their futons, the humming futons inevitably stimulate other students, and before they know it, they develop into a miraculous night!