I want a story where a person returns to the past to defeat someone who they couldn’t before. I don’t want something where they are fixing their previous wrongs or something. Also they should not be super powerful before going back in time. After all, they died being unable to defeat the other person. I read a webtoon called Once Again My Life and I really liked the plot. A prosecutor is killed by a powerful corrupt politician and is sent back in time for the purpose of defeating him. The main character had a clear reason for being sent back in time. It was not a miserable person somehow got sent back in time and this time he will enjoy his life. It’d be interesting if the story was in modern times rather than being focused on martial arts.