Minamoto-kun has a pretty face and because of that, he was bullied by the girls in middle school. He developed a fear of women due to the trauma. Just as he enters college, his father remarries and asks him to move out of the house. He arranges for him to live with his aunt. When he arrives at her apartment, she tells him that he will be her "guinea pig" in her reverse Hikari Genji project.
A story about two unusually mature young people. They are both smart, very together and they are in love. But, as grown-up as they act, they are still just 14 and their feelings for each other are captured with tenderness and lack of nostalgia, but very cutely.