I agree with you but it was expected honestly. Pyeonghwa's intent wasn't to make love to incheol but to put him into his place, hurt him even. In the previous chapter Incheol's ego got the best of him and he even taunted Pyeonhwa telling him to look who's on top. He even offered to fuck Pyeonghwa to help him out (pretty sure my old dude assumes every gay man likes it up the ass lol). So, yeah.. Noone deserves to be raped, and this chapter was so uncomfortable to read through. However, in the context of their dynamic, Pyeonghwa was literally throwing Incheol off his high horse. You can see in the quick flashback as well that the Congress woman also warned Incheol about his ego, and reminding him that he can't guarantee he'll always be on top (funny). With the MCs history and constant clashing, no other way would make sense. In every encounter they've been intimate, it's been for ulterior motives or as a power play to break the other. We'll have to wait and see how this develops! (●'◡'●)ノ

Given the dynamic between the two i definitely didn't expected there to be any lovey dovey first time, like it'll be toxic but both will consent to do it . But this...rape ? nah man , py so disappointed in you. Now I want you to grovel for that older man's love.
I was worried since py was falling for a straight older man who sees him as a tool to get what he wants, but now no, I want py to beg for incheol's love and attention.