
I think I get what you're saying.
Kind of like, whether Pram is or isn't trans, it shouldn't be what defines him as a character, and isn't a focus point of the story in terms of plot, important character development, or a defining genre...therefore the author might have made the decision to not state it clearly? It just is what it is and either you take it or leave it, as a reader.
Which I agree with if that is indeed true. Too many people judge too quickly when they learn that a character is something different from what they're expecting. Sometimes in good ways, sometimes in bad ways, but almost always without looking at them as..."just" a character, if that makes sense. Like, you start imposing your own ideas and expectations on them because of the fact that they are trans/homosexual/bi/straight/male/female/ethnic/etc... They're marginalized and stuffed in this little box of expectations, which sucks whether the views are positive or negative on that one aspect because you don't get a full sense of who they are---just what you want to see, and want to acknowledge.
So to avoid that, the author chose not to specifically identify Pram as anything.
Something like that?

Well... that is my point... better explained XD.
Though I think the author left that gender ambiguity about Pram as a comedy relief rather than such a deep reflection XD. But yes. Pram is Pram and if he define himself as a boy then he is a boy. Whereas he really is transsexual or if he is just a boy who acts and wear girly clothes, he isn’t just the cutest of the group (づ ̄ ³ ̄)づ
@Aki (original comment) I’m not denying your reflection nor trying to pick a bone with you. I just wanted to tell you not to wreck your head over that and enjoy the read :).
Is Pram trans? O.O