Heya I read the novel and sadly there’ll be a lot of violent SA on the future by the ML against MC. I’ll happen when ML finds out something he doesn’t like about MC. MC is not at fault at all. I really liked this manga and their dynamic was interesting so I went to read the novel but ML became irredeemable to me.
A big BIG spoiler to put in simple terms why SA happens: MC is a yokai (not even MC knew it), ML hates yokai, they go from consensual lovers to a relationship where ML r@pes him as “revenge” and punishment . He even explicitly tells MC that what’s he is doing to him is violence, not making love, and that he should remember what being r@ped is. He almost killed MC amidst the sexual violence.

I remember reading some comment about how there will be sa between the leads, so I was bracing myself. You know how nice it is to see him getting consent and being so tender with Eun-o, and they're both clearly enjoying each other? Usually it's surprise sa, but this was the opposite, this never happened to me before