So having played this a bit, I can honestly say the protagonist is a TRAP with some "man boobs" He mentions it. He has a small "pee pee" hence no bulge and can't fuck women with it because they won't feel anything.
In order to get money, you HAVE to work in the brothel(at least at first) which caters exclusively to futanari girls from what I can tell. Soooo It's Futa girls dominating a trap.
But this game really does try to twist and bend things out of line huh? Is Kana EVER a male name? If anything this dude changed his name and asserts he's male but no way does he want to be. Nice try dude