
I've re-read the whole story. And I just get that:
1) The main reason [uke] wanted to run away is because he's scared of the responsibilities that he'll be carrying as a parent
2) He might've or might've not still run away even if the other guy didn't help him
3) All the false information the other guy fed him just raised his fear.
To conclude, he doesn't want to be a parent.
He reminds me of those types of people that goes out, have ***, if gotten pregnant, run away aka leave child to the adoption service | church | similar location or take abortion pills. Tho his motherly (can't think of any other word) instincts makes him care for the child at least a bit. If said person did take care of their own child/children, tis possible that the child's life may lead to quite the dramatic turn of their lives. Like the sudden burden was too heavy for him after all, so he gave up, becoming a parent no one would want to become theirs.
He still strikes me as that kind of guy that I would label as irresponsible tho hopefully he proves my wrong on chapter 40... And if people would ask, "So you agree to what the other guy did? Confining him, hiding him in a room away from everyone else?" No I do not agree. He should've let the Dojin was it? Stay in the hospital, let them (parents) talk it out, and reach the conclusion themselves. The way he meddles in Byuls family makes me think that if Byul grew up and found out, might give one slap or punch as a gift to his uncle. But then again, who knows.
I'm not hating on him, but I don't like him, even from the start of this series. I was raised by a single parent, found out my dad (Who I never met) made me some half-siblings that he soon decided to sell to other parents looking for children because he don't have money. Oh yeah, reason why mom didn't stay with him: She found out he was like this. Confirmed years later after I was born by hearing from one of their close friend that he committed the action stated above.

I’m raised from a single family too. My dad got abusive and my mom left him. Having an abusive parent and seeing how they treated each other.. idk it made me feel like I don’t want to have a kid because of it. I can relate to hye sung in a way. His dad was abusive towards him so he has this irrational fear of being in the same situation because he is an omega. He doesn’t trust alphas because all the alphas that he knew were always using omegas and he didn’t want to be used. Hye sung might act all high and mighty but you can see how low he think his self worth is. especially now that he knows he’s an omega.
Yes, he can be immature but that’s why he shouldn’t be a parent. He didn’t want to resent his own kid and become like his old man. I don’t blame him for not wanting to become a parent and that’s okay. People grow up at their own pace. I believe that it’s better to have one parent who loves u than two parents who resent each other and neglects you.

I’m raised from a single family too. My dad got abusive and my mom left him. Having an abusive parent and seeing how they treated each other.. idk it made a me feel like I don’t want to have a kid because of it. I can relate to hye sung in a way. His dad was abusive towards him so he has this irrational fear of being in the same situation because he is an omega. He doesn’t trust alphas because all the alphas that he knew were always using omegas and he didn’t want to be used. Hye sung might act all high and mighty but you can see how low he think his self worth is. especially now that he knows he’s an omega.
Yes, he can be immature but that’s why he shouldn’t be a parent. He didn’t want to resent his own kid and become like his old man. I don’t blame him for not wanting to become a parent and that’s okay. People grow up at their own pace. I believe that it’s better to have one parent who loves u than two parents who resent each other and neglects you.

I see a lot of people here being triggered with the use of "marriage fraud", I mean, it's only a translation, japanese people might actually have a different wording from it that if read in a different way actually means marriage fraud. Tho I wouldn't know, I can't even read japanese. But I've seen cases where some japanese words can have two or more entirely different meanings depending on its arrangement and how it was read.
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sry for spamming the comment section :/ i just think stupid should be fought with stupid.

The plot seems to be a poor wording, and lots of yaoi logic. As said, it's not marriage fraud but more akin to a dating scam. The police would likely be unable to act, so it's been shown quite illogically. Ditto with how the character ended up in such a situation, he's engaged to a woman but doesn't actually have much of a relationship with her, and seemingly doesn't live with her as the contact stops after the phone number being blocked. He just took her asking for money for her mother at face value, rather than hearing it from the mother's mouth, discussing it with the mother, and also questioning why he should be the one having to go into his pocket and what are the motivations for this. Then there is the homophobia, by saying gay men can't have long term relationships, and just be normal couples, instead they have to jump from one night stand to another simply because that's what the character does, and the ignorance of saying gay men can't get married when yes this relevant to Japan, but certainly not internationally.

So... I think this is how it revolves...
They were supposed to be a normal family, but Sangwoo's dad became a workaholic ever since Sangwoo was born just to earn enough for his family (Seeing how he acted during his phone call with a colleague(?)) but this made the mom depressed and crave some attention, getting half-mad half-jealous of Sangwoo and probably thinking that if Sangwoo wasn't born, she'd have more time to spend with the father (Therefore murder attempt #1). Next few scenes, she gave up and started to f*** around with different men just to satisfy herself, Sangwoo found out, things become awkward, Dad caughts on what was happening, and here's what might happen next
[A] Married couple fights, mom blames Sangwoo, tries to kill him, Dad kills her before she gets to him, he kills Dad coz he felt "sorry" for his mum...
[B] Married couple fights, mom says sorry, dad kicks her out wants a divorce, mom decides she wants to kill dad, and kills dad then cries hard, Sangwoo kills mom to end her suffering coz he felt "sorry" for her...
Sorry, my brains running wild. I might be wrong. Things could go differently from what I have in my mind. Oh well ╮( ̄▽ ̄)╭

The only ending for me now is that they each go their separate ways, live their own lives, etc etc...
Jisuh and Heejae? With what happened, what they both had done, I don't think they'd cope with it. Jisuh can't trust Heejae (Like other readers here) coz he might still be a manipulative snake. And if Heejae was actually sincere about his feelings (Am not confident enough to back this up since most of the perspective in this story was Jisuh), nevermind loving the person, he just opened up, crashed down, he might've walled himself up farther, thus, can't trust that Jisuh isn't just going to do what he did again. In short, their mistrust all lead to what ifs for me.
Jisuh and Sunyool? They might be, they might not be. For now I just see 'em as really close friends. That's it. Who knows in the future (Depending on the reader's imagination) but, imo, they're stuck in the friend zone.
Nevermind what other people said that the revenge was good, it felt too childish for me. They're all grown men for goodness's sake. So ending this manhwa (seeing that the next chapter [51] might be the last) with a recent revenge plot does not go with a thumbs up in my book.
These are just my opinion tho... ╮( ̄▽ ̄)╭
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