Miki Ryouta, a junior high school student, appears to be getting along well with his single mother, but behind the scenes shes terrified of her sons every move and for good reason—hes secretly keeping track of every mistake she makes. His classmate Kasai Kaoru is fed up with his overprotective parents instead and thinks its his mothers fault that he is bullied. One day, Ryouta saves Kaoru from being bullied, and the two have their first conversation…