Mei Tachibana's life is marked by the pain of being wrongfully blamed for a class pet's death by her so-called friends in grade school. As a result, she has isolated herself to avoid being hurt again. However, her life takes a drastic turn when she encounters popular student Yamato Kurosawa in high school. Despite Mei's reluctance, Yamato insists on being her friend, leading to a series of events that change her life forever.

Say "I love you"
Tachibana Mei, a shy and socially isolated girl, has never had a romantic relationship or even close friendships. Her life takes an unexpected turn when she accidentally injures Kurosawa Yamato, the most popular and charismatic boy in school, sparking his interest in her.