>>54367079Dawn opened Pandora's box. Koharu was so sheltered that she knew nothing of sex, so when she met Dawn, a strictly anal-only girl with a zeal for spreading her beliefs, and got a sex education from her, Dawn was able to freshly program Koharu to only think of sex in terms of a dick in her butt or occasionally in her mouth, and to think of semen either as something to store in her ass for safekeeping or sometimes to swallow. Because of this, when she had her first time with Ash, Koharu sucked him off and then instinctively guided his dick into her anus, where Dawn had taught her it belonged. Since Ash didn't object to fucking her ass, they just went to town on her rectum for hours and hours, making it more and more flexible and elastic and fuckable, her virgin pussy left completely untouched. By the time Koharu learned vaginal sex was a thing, she was already too entranced in the world of buttstuff that she had zero interest in trying it out, lest it prove less pleasurable and a waste of time when she could be getting her butt fucked instead. After all, if she ever wants to get pregnant, she knows she can just use a turkey baster to suck Ash's cum from her rectum and shoot it into her pussy.