Shibata Katsumi

A senpai in Tsukasa's college. He has already received a job offer from a company, and all that remains is his graduation thesis. In his first year he acted as a freshman representative, and now he's a dormitory organizer. His teachers hold a lot of trust for him.

However, his gentle and caring nature as an honor student is just one side of his personality, and he has flashy and ruthless physical relationships with others. He is aware of the difference between his two personalities and mocks himself for it. Although he thinks Tsukasa is cute, he fears that he'd see the other side of himself, so he keeps his distance.