University student Hikaru is an egoist whose type is: "Girls who tell me that they like me." One day, something changes after finding his younger brother Hijiri going on a date with a younger boy (not really his lover).

(Source: Bunny's Scanlations)

Masumi is dating Tobita who under innocent face hides a burning desire for being abused. Catering to his needs Masumi gradually gets pulled more and more into the twisted relationship, fascinated by the feeling of sadistic satisfaction from dominating Masumi.