
Obviously MC is smart, but he is not omniscient. With the little info he receives in the phising caller, i would say that he's doing a pretty good job. I'm not expecting for him to think of very fabulous ways to approach those problems knowing that he himself is experiencing problems about his personal life so he can't always give a perfect solution for those things. So whether he fail sometimes, it's not his fault for miscalculating for he is only doing what he can and those are extraneous variables or unexpected occurences so its unavoidable to happen.
For that, don't expect him to always have backup plans.
(Need to say this cause i was pissed off in the early comment)

As much as i want to hate for being a coward Sunwoo, i can't blame him for that, his environment influence him so much that at some instances caused him to doubt himself on the decisions and actions he do. I agree that he's impulsive in his actions and i can't justify his actions saying that it might be different if the people around him isn't mean to him, however, even though he did something wrong, they should at least gave advices in a more concerned way (like not being mean/angry to him for being dumb).
Sorry just my inner therapist kicking in.

No words to explain how idiotic the seme is. Yeah he is protecting both uke and his son but god damn, can't you just communicate properly for once, i really thought that conversation in the balcony scene will develop into a more proper communication revealing about your emotions, but no, you really just need to stop and cliffhangered the uke resulting to all this shit. (My god why am i agitated.)
I'm f-ing sad that this got discontinued. I only learned the news after a year of waiting huhu. I hope a miracle may happen cause this manhwa was so good, and one of my favorite.