Ran freezes up as her tongue invades into her pussy, the panties easily sliding away as Riel licked her sensitive pussy, drinking the cum from her sex, "Aaaahh....Riel, s-stoooop~" she moans, but her hips were saying something else as they push back against her sister's face. The book fell open in front of her face. It was a fantasy story, but even reading a small amount of it...It wasn't going to help her calm down, but she couldn't stop reading it. Reading about the girl who was sent into the forest to find where a pack of wolves were denned up...Only to be pounced on, corrupted by the pack into a more...suitable form for their Alpha...Then offered up, all lust filled and... She stopped reading, shaking her head, but the idea in her mind...Every member of the pack of wolves pouncing on her, each one being her brother, fucking her hard and fast again and again. Then, delivered to the fierce, large werewolf that leads them and... Her body heated up rapidly, her sex dripping rapidly onto Riel's face as the idea fills the area around her, the obscene imagination as she was being eaten out by her beastly lust filled brother-turned-sister...
Then it started, Riel would only watch as her sister's lewd form of Uraraka became taller, thinner...Her breasts and ass staying nice and soft and firm, but her skin turning darker, tanned and her hair rapidly turning white as two cat ears appears on her head, tail forming from above her ass as Riel saw her sister's fingers as fingerless gloves appear on them, fingers diving into her pussy. Riel could only watch as her sister's shirt became sleeveless and tight, strap accentuating her breasts with the white jacket as the skirt became longer and a bit more heavy duty, pouches on her belt appearing as boots appeared.
It was easy to tell whatever had happened to them, the surroundings flickering in change, this was a big one. However, Riel couldn't stop as she felt her consciousness grow fuzzy as it felt like she was multiple places at once, her hair turning black as she was forced onto all fours. She instinctively knew what was happening, she was turning into some kind of beast...But in one of her instances, she felt herself turning large, male, and almost just as furred. But all thoughts disappeared from most of her heads as she just knew the vague smell and appearance of her quarry- Some tanned, white haired cat girl who had wandered into their territory.
Meanwhile, Ran wakes up, rubbing her head as she shakes the dazzy feeling from her head. What was she doing in a forest...? Wasn't she in a... Then her thoughts corrected, "No time to space out...Gotta find that den..." she whispers to herself, pulling out the iron bow off of her back as she starts to, quietly, creep through the Forest in search of this cave, unknowing that the wolves in question, who used to be her sister/brother already had her scent.