it was just a thought, first of all. secondly, as i said earlier, jihwa had sex with him FOR MONEY. he said it was super bad. you dont have to be interested in someone to have sex. those sex scenes with the masked man were because they paid him. it has nothing to do with interest. implying from earlier chapters, after the attempt to kill nakyum, the other guy said he had one more idea. it was around the time jihwa had sex with the masked man (once again, it wasnt because of interest. jihwa did it to cope and masked man did it for money) so i could only assume that could be a possible thing to happen. besides, that would literally scar nakyum, dont you think?? i think theyd try to get nakyum to stop having sex with seungho/maybe framing him or just even stopping him from being able to do any sexual things. like they think seungho would come back to them if his "toy was broken" yk?? i didnt think it was that hard to understand.
Tbh, I feel as if the masked guy is gonna rape Nakyum *hinting at the time Jihwa had sex with him* I feel like Nakyum would be pretty traumatized after getting assaulted that way and just wouldn't have sex with Seungho anymore. I guess they'd think that Seungho would come back to them if Nakyum didn't have sex with him anymore.