When Hinato starts high school, he moves into the dorm. But on his first day there, he's suddenly kissed by a second-year named Souya!? And then he sees some of the other upperclassmen having sex!! Is this place nothing but couples or what!? With Souya's constant teasing on top of that, will he be able to survive here for three years...? The story of Hinato's crazy dorm life, with an original sex-training chapter included.

(from B-U)