I think Akira is genderfluid since they're still struggling with clearly identifying as one gender and seems to be going inbetween the two, either that they're transgender due to the genderbend. Though I wonder about their sexuality, I'm sure they're into girls bc they like Rumi, but what about guys? Though I haven't really see them being attracted to other girls, so maybe they're demisexual, only attracted to those the have emotional bonds with? Bruh I'm digging too deep into what's suppose to be light hearted than complicated manga.
Regardless, thank you for the translation!!