Natsuki Haibara, a socially anxious college senior, is haunted by regretful high school memories. Suddenly transported back seven years, he gets a chance to rewrite his past. With newfound determination, he navigates the pitfalls of adolescence, aiming for the top social ranks and the heart of his crush. Armed with self-help resources, a loyal friend, and unwavering resolve, Haibara embarks on a quest to reshape his teenage destiny.