I'm rather surprised that the manga translators haven't read the novel or the translations of it, to be honest...
(The commentary on Bern's facial expressions is kinda a dead giveaway.)
Having read the WN up through chapter 107 or so, I'll just say that you're all in for a disappointment.
That said, there's a lot of adaptation decay here. Having read the original, I know a lot of what's being hidden (and some of the unlikable characters are even more unlikable than you know)...