
I do not like Yahwi at all. Like how is everyone fine with how he took advantage of Jooin and gets his way that scumbag. Cain better realise that Jooin is in trouble and save him

I get what you're saying, Yahwi definitely has a lot of things he needs to improve. I kinda think that's the main plot of the story. Him learning to open up and allow himself to fall in love bc of Jooin, instead of pushing people away.
But when it comes to the sex, I personally think Jooin actually wanted to have sex with Yahwi but was too shy to admit it, especially after their big fight, and that Yahwi knew this. It's the only thing that makes sense to me since he was hard the entire time, climaxed multiple times, and actually seems really happy about the turn of events the morning after.
Imma let you all know I am rooting for Cain. In the short time we have seen him he obviously cares about Jooin, he is sweet and doting towards him which Yahwi isn't. He couldn't be perfect I agree we will see some character development, but at least he wouldn't be like Yahwi literally only using Jooin for sex and being an asshole in his behaviour