@greyhud90
Okama jokes are usually about a man completely and utterly failing to look like a woman while dressing and acting like one. The kind of joke you're thinking about is Otoko-noko (Male-Daughter) where it's a guy who passes as a girl.
Either way I don't think it applies here, status screen should probably show such information. My guess is that she's actually lesbian and/or views MC as a little brother, either way not a love interest.
@Spoonikle what kind of guy wouldn't ogle when there are F cups in such revealing clothing right in front of him though? I, for one, don't blame him at all.