At first i was thinking the same thing but if i were to put myself in his shoes then i would do the same, i mean like ur life is in dangerous in another life n suddenly woke up in isekai world(his novel world) where the person i only recognize at first is the one i love n feel guilty with, ofc i would get freak out n confused. It wouldnt be that easy for me to put myself together when in that world there is so much is going on n keep messing me up(like keep getting poisioning or everyone in there is sus). I guess dongha only trust yujin thats why he only focus on him maybe he will adapt slowly with the help with that glasses guy (maybe with yujin too)
I've actually read the korean raws-- and I understand korean, he does get back on his feet after being in a desperate lovey trance. If one were to get isekaid in a different world, as an adult at that, the first logical thing to do is think of ways - and obviously he wasn't doing that, BUT that's his character. He's supposed to act that way. It gets better for him.
I'm not gonna lie, the level of naivete and stupidity the uke revels himself when he gets isekaid is frustrating to see. He seems like a logical person, and he can be one but he instead chooses to be an incompetent blabbering lovesick fool. He doesn't even have the slight awareness of his disposition in his mansion, use his medical skills to use and prove himself worthy of being the young master, and dethrone his leech of a stepmother. But no, he chooses to stumble over his own two feet and be delirious over his first love. Which is understandable, but ONLY to an extent. Where's his logical sense and survival skills? Does your love render you this helpless.
Anyways. This is a good manhwa because the author successfully made me pissed off at the uke.