After suffering a traumatic experience in making friends, 16-year-old Mei Tachibana decides to ditch making friends altogether during high school. She catches the attention of Yamato Kurosawa, the most popular boy among the girls in their high school, who wasted no time in making friends with her. Yamato wards the stalker away by pretending to be Mei's boyfriend, complete with the "I love you" phrase and what eventually became Mei's first kiss.