MC doesn't cover up for Klaus (at least not in any significant way where it matters) and is mostly indifferent. The only time I recall him helping Klaus out is with the white-haired church lady.
Anyway, don't see a reason why the hero would have to beat up Klaus and risk trouble from the guild. And yeah, Klaus is a dick but sometimes a useful one. Thanks to Klaus being an idiot the hero got to have his way with Eileen. As for the other stuff Klaus does? Hero's mind is set on sleeping with women, not fighting for justice in the guild system. There's nothing beta about not giving a damn.
By vengeful I mean the hero would most definitely get into trouble from the guild. No one is getting raped lol. The hero would kill him for that (at least now, after sleeping with Eileen), but that is simply NOT gonna happen. There is NO ntr. I really don't know how you got to the conclusion this may happen after all the previous scenes with Klaus... Maybe it's just the stuff that happens in other games.
I would say the reason people are thinking that, is more because it is a logical conclusion for the type of character Klaus is/seems to be. (Like why would they stop).
And when you are playing a game and immerse, you don't really go "O but wait the dev said there wouldn't be", especially if they haven't read such a comment too.
Anyway, that isn't the reason for the comment, I just read that message and thought I would throw in my understanding of why such concerns exist.
ACTUAL REASON FOR THIS COMMENT, is well three things:
1. Apply for control of the thread. (assuming you want to that is).
2. Apply for dev role. (you can make a ticket using the ticket tab at top of page, or asking a mod).
3. Kinda requires No. 1 or asking the thread owner to do this, but I suggest adding the whole "No NTR" thing to the thread somewhere so people know. (you don't want em reading one of these other comments and getting the idea that they game does have NTR in it).