Hatori is in love with her childhood friend Rita, but when Rita gets himself a girlfriend Hatoris world turns upside down.

Toji Seryo is one of the most popular of his students. It is widely known that Toji Seryo're dating anyone who asks him out on a Monday, but he does end on Sunday again. Yuzuru Shino go to the same school. He looks good, but all of his girlfriends break up with him. He becomes curious about Toji Seryo, and ask him out on a date as a joke.

A love story between a famous 25-year-old songwriter, who keeps his identity hidden from the public, and a 16-year-old high school student who possesses a gifted voice.