Hino has always been popular with women, but has secretly loved antisocial Yaku since high school. 2 years after following Yaku to college, Hino still hasn't been able to even become friends with him. One day, after a drinking party, jealous that Yaku went despite declining every time Hino asked him, Hino hits on Yaku and the two have sex. However, Hino is, once again, unable to confess, after finding out Yaku is only interested in having sex friends. So, that's what Hino settles on being.
Misekake Oresama-kun