Atae Souichirou, 15 years old, is an angry schoolboy who has a scary face. He has been raised by his granny because his parents passed away when he was a little baby. Souichirou's passion is drawing and being in an art club is what he always wishes for. However, other students keep on rejecting him because of his bad temper.

One day, he meets a male student named Ogiso Kaname - 17 years old, who agreed to become his muse. However, it turns out that this event is a smash that helps Souichirou realizes that he's genuinely interested in a male's body! After that, Souichirou started to have a fetish for his senpai Ogiso and promised that he will protect Ogiso from bad people who sexually abuse him by becoming senpai's lover.