Basically, ML propositions MC with a f*ck buddy's relationship and lowkey uses twisted logic to get the MC into agreeing. As I said, ch 19 is particularly concerning because ML brings forward a "contract" which states that the terms of their relationship, such as it being confidential, which is totally fine but that's as fine as it gets. From the second clause onwards it's super problematic since there is a clear power imbalance between ML and MC. Also one of the terms literally says "Occasionally refusal in the process is fun, and refusal or negative response is not allowed"??? Excuse me??? That's very much dubcon if not straight noncon. Meanwhile, MC does find that the terms are weird and that he shouldn't agree but the ML lowkey gaslights him. MC is like: "but what if one of us gets into a relationship" (because one of the terms it's literally that they can't end the relationship unilaterally??) and then ML preceded to be all like "why wouldn't I agree to end this relationship, I'm not gay" and "anyways are you sure you wanna fall in love? Love is overrated and girls are clingy and b*tchy and are only after your money" how is that not toxic?

the ML has become attracted to the MC and suggest/pressures him into becoming friends with benefits (but apparently only kissing and hand stuff). I think he does this as a way to get into a relationship with the MC, but he doesn't seem fully aware of this himself at first.