This is just my thoughts, okay.
But I think that ml here is feeling a sense pf guilt for not being able to be there for the OG I-heon. I don't know if he realize it himself but there's a clear indication that he does and he is feeling it. And so, he turns those feelings into suspicions and vents this to the now MC I-heon. He clearly hates himself for it but doesn't know how to express these emotions since he grows to this age behind a mask, a pretender who must not express thoughts that's detrimental to him. He is used to it and has forgotten this feelings but due to the MC I-heon and the OG I-heon, this feelings resurface and turned into a thing called "curiosity".
He definitely has to feel some sort of guilt. I can’f say for certain since at first he seemed like a manipulative person. But after seeing his expressions and memories, it doesn’t seem like he hated the OG I-heon (maybe even wanted to be friends or more) so I don’t think your theory is wrong tbh
Sekyung definitely feels guilty. And I think he's completely aware of it too. The fact that he spend so much time looking for I-heon to the point where he got sick is kind of an indication that he's aware. It make no sense for him to go to such length without knowing the reason why he's doing it. Especially when he has a calculating peronality.
Brett's duality towards Hayden and other people is so amusing to watch. You can really tell the difference.
For now, I'm cheering for Brent since he got cock blocked some chapters ago. Go get what you miss girl! ୧( ˵ ° ~ ° ˵ )୨
The mc is so weird. It feels like he has a few screw on his head, it's messed up. I don't like this, have to drop the story. It's meh~
If I were the person/uke, I'd kill myself in a heart beat. I'll get this trauma that I'm dirty. This is driving me mad. ᕙ( • ‿ • )ᕗ
I didn't realize what this story is all about since it has shitty translation but halfway chapter 1, I realize that he was framed. I bet my whole fortune that the one who posted that shit in the app was his co worker who asked if his in heat. Just wow, whoever makes this has a few screws in their heads.
I hate this kind of plot. It's so disgusting. Although I read smuts but if its SA, I'll only like it if the uke/seme is a shameless slut as well. Not like this when it's only an ordinary guy whose a recessive omega having his unexpected heat in a train, getting gangbang like crazy.
I know its cliche but hey, it's still cute. I guess most parts of the story since it's very predictable but then again, no matter how many times this kind of plot happen. It's still a good story nonetheless and it doesn't give it less worth, just saying.
Chapter 4 was wholesome.