I'm still confused on something like.. is he asexual ? 🥲
He used to be human, but like he has no interest in anyone and when it comes to aging, it's not like he wouldn't have elves around him that could live as long as he does
Please don't include any of that "asexual" nonsense XD
First of all, the Japanese as a people are still somewhat normal (for the most part), so they don't use concepts like "asexual" or other made up nonsense to make themselves feel special.
Second, back in the days before the "sexual revolution", very few people had sex out of wetlock, because it would be stupid to do so. Your family was your insurance, not the government, but before that you first needed to build a stable family. This is why you didn't have women sleeping around all the time like what is happening now, and women instead devoted themselves fully to a reliable partner, usually a childhood friend or the son of a friend of the family. That is why you had far less divorces, because it was intentionally made hard to divorce, so people were stuck together and forced to tolerate each other's shortcomings. Once they did so, they were able to "pair bond" as they say these days, and from there love blossomed.
Aesir not only has less drive to find a partner as an elf (due to their long lives), there is also no porn in that medieval setting, so less oversexualization all the time when compared to our lives. He likely has a healthy drive, he just lives in a less degenerate world setting (for better or worse), and is wise enough not to fool around unless he finds someone with whom he can settle down.
Plus, Aesir is a high elf, so it is much harder for him to conceive children with non-high elves, even with elves. Due to how complex his species is (even when compared to elves). So he is unlikely to even have children with an elven woman. Plus, he doesn't strike me as a Rudeus Greyrat, so he doesn't have the ridiculous sex drive of the Greyrat family XD