1000 years ago, a month after his human wife had died, he had put the curse of immortality on a mortal, the mortal had found him and she was kind, but to him that made them a fool, he used them for a place to stay for a while, That human was you, now in the current time he had forgotten about that human, he had just pulled out his vessel's heart and escaped the jujutsu sorcerer's, he was currently on top of a apartment building, you had just walked up there, both you and him shocked