It's just a passive granted for the first time pussy sex, not a gynaecological exam. You get a similar passive for first handjob, first anal sex, first rimjob, first blowjob, first titjob, first kiss, first blowbang, first gangbang and first spitroast. There isn't anything special about these activities being her 'firsts', but the game fetishizes those nevertheless as stepping stones in her descent into depravity. And vaginal virginity is fetishized the most, which is a recurring theme in many H-games. The devs didn't bother to draw a hymen or blood stains upon defloration, but virgin status is always displayed until she's deflowered, either by a live dick or dildo. Her charm is higher as a virgin also. You get a title for having anal before you give up your vaginal virginity. In the same perverted vain, you get a title for putting your mouth on a dick or assring before you put it against another mouth. Then, after defeating lv 3 boss, (virgin-slut) Karryn has an internal monologue where she expresses a bit of guilt for going wild in the prison and wondering if the one she truly loves is going to find out about her shenanigans if she keeps her virginity.Broken Hymen passive is pointless. You don't need a dick shoved inside you for the hymen to break. It can even break during physical activities like bicycling or doing a split or any other sport.