 If you liked Boku dake ga Inai Machi |  ...then you might like Re:Zero kara Hajimeru Isekai Seikatsu: Dai-1 Shou - Outo no Ichinichi-hen |
Both main characters are able to travel back in time to change certain events. Both revolving around murder. Boku Dake ga Inai Machi is about kidnapped children who are murdered and a man who travels back 15 years to solve the murders. While Re:Zero is about a boy being murdered and traveling through time every time it happens in a fantasy world.