Can you elaborate on why you think Jaeyi is being manipulative? Like yeah Ideum is inexperienced and maybe a bit naive, but the terms of their relationship were pretty clear from the start. It seemed like they were both fine with a physical relationship at the beginning, but it’s obvious both of them are starting to catch feelings now.
Ohhhh ok then yeah I agree with U. The brother’s vibes r weird as hell, and it’s obvious he only wants Ideum because he knows he's with Jaeyi. I was rlly confused bc almost all of the comments I’m seeing about Jiseong have been negative (except for a few thirsting over him here and there), so I assumed you were talking about Jaeyi.
For some reason, this really gets on my nerves. I don't have a problem with people thinking or feeling differently—we're not all the same—but Jiseong is just a malicious person full of ulterior motives. Meanwhile, even if Jaeyi is slow to realize how he feels, he has done so much for Ideum… It's driving me crazy.

Mkay, I see you guys, so physically exploiting someone is a bad thing, but manipulation, influence, and taking advantage of someone's lack of experience and good faith and naivety are totally fine as long as they look good. So it's fine to be a disgusting person as long as you find them attractive? Fine..