If you liked
Boku dake ga Inai Machi
|
...then you might like
Tokyo Revengers
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Has a similar themes. A time loop going back in time to fix something or save someone.
If you liked
Steins;Gate
|
...then you might like
Re:Zero kara Hajimeru Isekai Seikatsu
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The main characters in their stories each struggle to save those who are precious to them by going back to the past. But the way they do it is very different. For the main character in Re:Zero, he does so using the ability he calls "Return by dead". But the requirement to use this ability is very risky. Which is where he has to feel the pain first. Then he returned to the past. If he used his ability often, he could be mentally crushed from feeling the pain too often. For the main character in Steins; Gate, he uses a machine which can send memories to the past. But there is a possibility of failure. That is, he could be erased in his world. They both suffer because it is their own choice. But that's what makes their story so amazing.