@Seth
Spoiler!
if you read the book, you will know that the mc is like that because he wants to atone for his sins. In the novel there is a part where he doesn't buy branded clothes or things and only donates his money. The seme here is really a red flag but uke prefers being hurt rather than being happy because he is punishing himself. It's also in the novel that he doesn't want seme to take care of him or help him, so seme should treat him that way because that's what he wants too.