During sex training at the university, the girls are allowed to have sex with other men in their rooms, but not with Touma, who is the only one allowed to enter their rooms. The girls try to convince Touma to let them have sex in his room, but Touma refuses. When the girls finally get to the point, however, they realize that they have had sex with each other in the same room, and they decide to meet up in the morning.
During sex training at the university, the girls are allowed to have sex with other men in their rooms, but not with Touma, who is the only one allowed to enter their rooms. The girls try to convince Touma to let them have sex in his room, but Touma refuses. When the girls finally get to the point, however, they realize that they have had sex with each other in the same room, and they decide to meet up in the morning.