A warrior who goes back to the past with a difficult mission. His mission is to kill that man, or...
Let that man be happy!
Note: The main attacker! The one who is reborn is the attacker, and the main one is the sustainer. I accidentally made the wrong check. You can change it and change it back immediately. You can just ignore it. The background is the future interstellar, probably mechas, insect beasts and the like.