As a demon slayer, he thought he would probably die in a wrong way.
He was obviously a demon slayer but he was friends with all the demons. He seemed heartless on the surface, but he deeply cared about the only one he had in his heart. In the end, he was hunted down by the person he loved with all his heart.
It is also a miraculous thing for people to live as long as he did. He thought so, and then allowed the person he loved to carve out his heart and eat it.
I must be a pervert myself if I think "that's okay".
Yu Shaoqing: As a demon slayer, have you ever thought that you would get so close to us?
Jiang Ming: Why not? It is natural for people in society to have good relations with all parties.
Yu Shaoqing: As a demon slayer, have you ever thought that you would be willing to be eaten by a reptile?
Jiang Ming: I've thought about it since I knew I loved him. What an idiot.
Yu Shaoqing: Damn! What have you never thought of!
Jiang Ming: Usually I have thought about everything you think of, and I have thought about things you haven't thought of. What do you think I haven't thought about yet?
Some. He didn't expect retribution to come so quickly.
As a demon exterminator, Jiang Ming never thought that he would not be able to enter reincarnation after death, and he even had no idea what it was that turned him into a ghost.