There are actually 5 characters with their gender being unknown, only 3 have been shown in the anime, being Opera (season 1), Camu Camu (also season 1), and Alicred/Ali (season 2), the two other characters are Otonja, and Yamanda, both are service demons. Anyway, i think it's pretty cool how the have so many non gender specific characters.
kinda, i read hebrew. It's basically fancier hebrew with little loops and accents at the ends. You cant read it well though because it doesn't have the things on the bottom (kinda like vowels) Don't get it confused with cursive though
On 0:33 Clara looks like litteraly a Loli hahahahah well she's a playful loli after all I think Iruma will look a cool but a loner mc if he became more listless character. (2:14) For me Opera is a boy?? Well we cant identify it yet so this is just my opinion.
At one point, Iruma asks Opera what gender they are(this is in an extra in the manga), and they respond with “what would you like it to be?”. Iruma guesses female, and their reply is: “Sure, let’s go with that.” Even in flashbacks, Opera has an androgynous look, so my theory is that the author simply doesn’t want to assign a gender to Opera, and prefers to keep them non-binary. The LGBTQ+ community has been a part of the cast, seen in Gyari and Poro, and it’s been treated extremely casually by demons so I don’t think it’s something important or will be of importance in the storyline.