Playboy Shishidou is seen as an enemy by the thoroughbred honor student Shiba. However, it could be said they were close friends before.
When he reached puberty, a desire to submit Shiba grew inside Shishidou, causing their relationship to turn sour.

Since then, they haven't being close at all, but the Shiba who's preached Shishidou about his relationships with women, becomes his partner to let his lust out...?!