Boku ga Boku de Aru Tame ni

Shun Asakura, a second-year high school student, has known Sana Wakatsuki since childhood and has had feelings for her for many years. When his family moved away in fourth grade, he was unable to confess his emotions before leaving. He has regretted not expressing them for seven years, and upon returning to Sana's town, he decides to finally tell her how he feels. However, he meets Ayumu Fujisaki, who looks very similar to him and represents an idealized version of himself.