Mild-mannered math teacher, Shirai, always sees a certain kid at detention—Akagi, who also happens to be a popular actor. For some reason, Akagi seems to be a bit too friendly and he keeps whispering to Shirai that he's cute! It's hard to tell if Akagi is being serious or not. But one fateful day, when they are in an empty classroom, Akagi makes his move. He seems serious this time! Shirai resists, and pushes him away. Before he can figure out what's going on, Akagi suddenly drops out of school... leaving Shirai more confused than ever!