Anastasia watched the door close before stepping over to the mirror. Looking at herself, her eyes followed the slow crawl of her brother's ejaculate from the bottom of her cleavage through her thick, water-repellent fur. It drooled down her lower belly towards the flash of wet pink between her legs, demanding to no longer be ignored.
In the months since leaving Stusport with her mother, they'd been on fourteen checkin missions together, ten of which turned into rescues of seventeen more brothers and sisters. Of those, four were boys of appropriate age: a half-rabbit and half-wolf triplets. As Jasper predicted, none of them had any reluctance to have sex with their biological mother.
Ana watched from the safety of her Invisibility spell or pretending to sleep, masturbating quietly as she did. The sight and sounds of her mother's ecstasy was eating away at her aversion to penetrative sex.
Zarron had not provided much of a sexual education to either her or her sister, which she realized in retrospect had probably been a good thing for girls raised by someone so villainous on so many other axes. What she knew before meeting her mother were from books and as a life wizard, Zarron had quite a few. She knew the science of sex and she'd felt the pangs of her hormones calling for her to mate but it had never quite clicked where it all went and how so much of someone else displacing her insides couldn't be painful. Especially with the size of her brothers' penises, which was most of her frame of reference and all somewhere around the size of her forearm. How could there be so much space inside her?
She'd watched her mother closely enough to see her belly bulge with the rhythm of one of them thrusting into her and her cries of bliss were sincere but some girlish mental image didn't click: how could being impaled and your insides displaced around another person feel good? Her only frame of reference was eating too much or needing to use the toilet, neither of which were pleasant associations. She'd built it up so much in her head that the idea turned her stomach to the threat of boiling over.
That negative association was validated the first time she'd seen anyone have sex, witnessing her brother's soul being extracted through sex magic. She had in fact, thrown up then while falling backwards and triggered this whole series of events.
Now she'd been in the room with her mother enough times that she was coming around to the realization there was something she was missing. Someday, she would try it.
When feeling particularly bold and interested while invisible, she'd lean in just inches away from her brother's penis pistoning in and out of her mother, holding her breath to not alert either of them. Other times she'd gently touch her mother's rear, breasts or face to let her know she was there with her. All of it risked becoming visible but she loved the thrill of tempting it.
Unlike with Jasper, she decided to not get involved with the others and as far as they knew, it was a secret between the triplets and seperately the half-rabbit that they'd had sex with Portia.
Anastasia was a virgin and her mother assured her often that was her choice. She was quick to add that when the time came, it shouldn't be with one of her brothers. That was hard advice to take seriously coming from their incest-addicted mother but also when these were the men she was surrounded with. The idea of sex with a stranger was scarier than sex with her brothers at this point.
Her mother had explained why there was such a cultural stigma but Anastasia had long been an accomplice to the creation of inbred offspring in Zarron's lab. The actual sex part was insignificant in comparison to creating new inbred lives, which she'd done many times.
Out in the world with her family sneaking around to have sex, she learned how strong and unquestionable the taboo was.
