Issei a supernatural being of unknown origins, has acted as a force of vengeance for centuries but has grown wary of the bloodshed and violence. Having dropped his old life, he opts to live a kinder life, now helping others. However, his past isn't done haunting him as the game of fate is cruel. AU. OOC. Issei x Harem. Rated M for Future Chapters. Immortal, non-cannon harem.