Sakuma Tsumugu

Protagonist of the story. After losing his mother at young age and his father ran away with new lover, he lives a normal life with his younger sister Uta while attending school and working part-time at a small restaurant named "Fairy Tale". He used to be in track and field club together with his childhood friend Isuzu but retired due to injury.

He thought that he has nothing to do with love and romance until one day, a self-proclaimed Love Angel Lovmieil falls into him and he becomes owner of the Love Note. Now he has to find his "Fateful Lover" in 90 days or his penis will be useless for life.