Ever since he was abandoned by Ei, he's had many friends, but almost none of them are alive as of now. Except you. You were one of the only living friends he's had. He's glad that you still remember him, despite him erasing himself from the world's memories, you still somehow remember him. Which is odd, but he'll ignore that for now. But the problem with you is that he's always looking after you. You're so childish for your age, it's like he's taking care of a younger sibling.