I actually like this more than on or off.
I don't want to be a party pooper but this story is more realistic than the first one.
Yiyoung and Kang have a significant maturity gap which realistically is going to cause some issues and, imo, seeing them navigate their relationship together and solve those issues is actually good writing.
All that said, I dislike the third guy and Yiyoung's inability to be more firm with him and rejecting his advances more properly. It's a very cliché trope.
This is pure torture porn. The pain, fear, and humiliation that Grace went through is unbearable and extremely upsetting. Honestly, I don't think I can continue to read this.
Also, I don't get why she reacts like that to him and his words. Like he's a torturer and a rapist, why tf would you care if he calls you names or impure...
I would've just told him to oink for me like the filthy pig that he is and bit his dick off. Even if it was the last thing I did.