Manliest would probably be Luka. Likes guns and fighting, bad with talking about feelings, doesn't care about her looks...

I guess her submissiveness could be read as a feminine trait?

Although, tbh, I interpret her personality as being pretty genderless.

Not sure who my girliest is. ...possibly Alex, haha. (How's that for reversed gender roles)

He's super into fashion/his looks, loves sparkly things. Can be super catty sometimes.

Um, I guess he's got a stereotypically manly sex drive (i.e. wants to bang everything)?

Though really, he's more of a stereotype of a flaming gay man...

Aya's pretty girly too, in a kinky sort of way.

The thing is, she specifically likes to mess with people's expectations of her and that includes gender roles.

Esp. in her clothing, she really likes mixing masculine and feminine elements in unusual ways.