Boku receives a wedding invitation from Kasumi , his childhood crush and the only girl who was ever kind to him. Seeing her and his former peers living successful adult lives makes him realize how far he has been left behind.

(often translated as Turning Back Into a Kid and Starting Over!!! ) is a psychological drama and revenge-themed adult manga and anime series. It centers on a protagonist who, after a life defined by childhood trauma and social isolation, is granted a supernatural chance to redo his past. Core Plot and Synopsis

Other characters from Boku's childhood who appear as the story expands beyond his initial confrontation with Sera. Media Adaptations

Saki1 ❤ Sera NARUMIYA1 ❤ SUZUHARA. Kasumi. Yumeno. Sera no Haha2 ❤ Boku. aniSearch.com Exploring Gaki ni Modotte Yarinaoshi: An Anime Review

Consumed by a wish to start over, Boku is mysteriously transported back in time to his preteen days.

The "neighbor's sister" and Boku's one positive childhood memory. Her happiness in the original timeline is what triggers Boku’s desire to reset his life.