Boku dake ga Inai Machi

Satoru Fujinuma is a 29 year old manga artist struggling to make a name for himself following his debut. But, that was not the only thing in his life that Satoru was feeling frustrated about… He has a unique supernatural ability of being forced to prevent deaths and catastrophes by being sent back in time before the incident occurred, repeating time until the accident is prevented.

One day, he gets involved in an accident that has him framed as a murderer. Desperate to save the victim, he sends himself back in time only to find himself as a grade-schooler one month before fellow classmate Kayo Hinazuki went missing. Satoru now embarks on a new quest: to save Kayo and solve the mystery behind her disappearance.

(Source: AniList.co)