I mean, it's not revealed yet but if she's a mystical hermaphordite or was born a man. If the latter, she seems a little young to have gone out and gotten surgeries like breast enhancement. If she even wants to do that.
I never really thought it was a good idea for this game to "cross the streams" as it were, games with a single trap character often get split between pleasing different audiences. And it's weird for characterization, you can't commit to the MC's preferences since they're up in the air based on the player. Very few have ever executed on an all trans game, which seems like it would work better. I wouldn't be into it myself but I just think it'd be more satisfying for the audience. Instead of heartbreak because Nea can't get updates because she is statistically doomed to lose every vote.
I mean, even this debate over her tits shows a split in the dickgirl audiences. Some want her to be a realistic trans character, some want her to be a futa straight out of fiction, so you already got a split there. Not to mention, you'll get some who just want to fuck her and others who want her to fuck them so that's going to create a vioent debate as well. So trying to run vanilla characters alongside that? Might be too much.