Ah okay, so this is a light novel adaptation, and a rushed one at that, cause the elf guy is just not likeable at all right now but he is presented like we should already give him a chance. And not even in a fun way. Which is a great way of presenting the deuteragonist, like wow great his "the world is so different now!" is through sweets, wao amazing sugoi, definitely never seen that before /s
Idk, I have to assume that in the light novel, they do present him as an asshole through the MC's POV as an unreliable narrator to sell the bad first impressions more, but because the novel readers and artist already know that elf guy isn't as bad as he seems, they subliminally don't present him that way for us manga only readers. But the events are still the same as narrated, so he just looks like a pompous prick
I'm making a lot of assumptions though for someone who has never even heard of the original novel