Lover's Position

Jun secretly loved Hayato since high school, but Hayato already had someone by his side. A few years pass and Jun runs into Hayato again at his job. Jun takes Hayato home after a drinking party and his dream seemingly turns to reality. Everything seems to go well until Hayato tells him not to come over because a friend will stop by, without explaining much… As a result, Jun becomes nervous about the state of their relationship. Is Jun the real lover? Or is he a substitute for someone else?