For the record, I think Kobinata is biologically male. I'd like to believe that they might be an 'egg' and may come out as trans one day, but I won't assert that. Or at least not be combative about it. Its just that a lot of trans ppl are crossdressers (in a way) at some point so its fair to think Kobinata might be on the way towards that. I mean, they never seem offended by speculating and seemed pretty okay with switching personal pronouns when the MC's sister visited, so they could be non-binary. Or, again, just a crossdresser which is fine.