
I think seungho, like the audience, has noticed that nakyum's sudden change in behavior/apathy might have been brought on by depression, or giving up on himself. Which is the reason he's so insistent on getting an explanation from nakyum, he hopes nakyum will give him another, better explanation for his sudden change. But admitting that is the same as admitting his feelings for nakyum. Some might argue, through, that nakyum just noticed that he might have feeling for seungho and so he stopped struggling, but I really hope it's the former. Too many yaoi's have fallen for the Stockholm syndrome hole, that I hope this one doesn't either. I want the author to delve into the complexities of nakyum's feelings, and based on the previous chapters, I don't think she will disappoint. Unfortunately, this will cause quite a few more chapters of this "missunderstanding", before they get together, but I think it would totally be worth it.

One question, why are the developer dudes so afraid/surprised that MC is getting this hidden quest? Like I understand how it was unexpected, but why does it feel like they don't want him to get it? Was there something bad about it that I missed, or was it just too op of a job?

Because he already received several hidden events / quests which were meant to be discovered much later in the game and he isn't really interested in solving any of them, instead still reading in the library triggering more unique events.
Since all this quests / events are only available once in the whole game, he is blocking a lot of high end content without being aware.

As someone who read the novel (it's been a while tho, so things might not be totally exact), I have to give an explanation. A lot of stuff was skipped in this chapter. For 1, MC was a ~40 year old Earth man who randomly woke up in this new world in his ~12 year old body. Humans are rare, much less with black hair and eyes. Beastman instantly kidnapped him and he's been a slave for a long time (forgot how long). It took weeks for him to heal, not just day btw. Also this one chapter is like the first ~10 chapters combined. And this novel is m-preg. And that's my mini summery of stuff they missed

I literally just came from the novel to check Mangago and saw this on recent XD I don't remember much from the beginning since it's been so long (I'm near chapter 950 right now) so many things have been forgotten. She hasn't used honor points in forever, or that rabbit kick move. Sigh, the good memories
Before you get your hopes up, this manga series was dropped in the original language iirc, someone plzz prove me wrong on this