Anime where the main character goes back in time

- Anime where the main character goes back in time to save a girl
- Anime where the main character dies and goes back in time
- Anime where the main character travels back in time
- Anime where the main character is sent back in time
- Anime where the main character is op
- Anime main character is villain
- Anime where girl is the main character
- Anime where main character becomes a monster