Reincarnating into another world was a surprise, but even more astonishing was the fact that he had been reborn into a world he knew quite well and into a body that he knew well, or at least what he had seen in the anime.. Copyright Notice: The characters and world portrayed in this story are based on the anime and manga 'Jujutsu Kaisen,' created by Gege Akutami. I do not own any of the manga or characters from the series, other than my own OC.