The Duty of the Bride is to...be shown off?
The elf was undoubtedly weird, in the sense that he didn't like to adhere to this world's societal norms.
He kept talking in casual speech, despite being an elf who was supposed to walk and talk with great elegance. He would awkwardly add polite words when he spoke to me, but that only augmented how detached he was from the practice on a usual basis.
It wasn't just the way he talked, but also the way he conduct himself in anything, including meals. He really didn't like to bother with correct utensils and prefer anything more simple to eat; sandwiches, grilled meats, or noodle dishes that only needed one plate to be served. He had an unhealthy obsession with coffee, and couldn't care less about tea time.
Listen; it might be just the case of an eccentric inventor, but he could also be an otherworlder. I still needed to dig deeper into the evidence for now.