Hello all, back again with a fresh smut fic for you – that witchcraft-related concept at long last. That said, I've re-worked my original concept a bit, hence the change from 'White Witch of the Woods' as the title. This first chapter is a little Thin Ice (and yes, I'm still pushing that for the Weiss/Winter ship) spiced up with a little something that those of you who enjoyed Slithering Darkness may find to your liking… This whole fic won't be about tentacles, mind, but I thought it was a nice place to start, and I may revisit the idea later. For now though, do enjoy, and as always, any feedback is appreciated.

Weiss concentrated long and hard, but no matter how hard she tried, the young apprentice witch couldn't quite manage to complete the spell. Ever since she was a little girl, she'd always wanted to follow in her dear sister's footsteps and train to master her powers as a witch. Of course, witchcraft was hardly considered a 'polite' art among the ignorant masses, and so her only choice was to study under dear sister's exceedingly close and thorough tutelage. Even so, no matter how many glyphs she could conjure, no matter what supernatural feats lay at her fingertips, She'd never successfully summoned a familiar, and in Dear sister Winter's estimation, this simply wouldn't do…

"Now concentrate Weiss…" Winter instructed patiently, channel the energy into your body from the world around you, shape it – give it purpose – and call forth whatever you like…"

Weiss gritted her teeth, trying to call the image of a small Nevermore to mind, but as she tried to put it together, like packing snow into a mold, she just couldn't get it right… It was like the 'snow' was melting faster than she could grasp for more and add it to the image. She growled in frustration, and the glyph fizzled and sparked before flickering out.

"Why can't I do it!?" She stomped her foot in frustration, "I don't understand! I can see what I want, but I can't gather enough power!"

Winter frowned, pulling Weiss into a warm embrace from behind, "Perhaps you should choose something simpler-,"

"No! I want to get this right!" Weiss protested feebly, "Let me take another look at your spellbook… I'll figure it out…"

"Grimoires are not things to be trifled with Weiss," Winter shook her head as she stroked Weiss's hair, "They have minds of their own… and if you aren't careful and disciplined, they can… be problematic…"

"But-,"

"Besides…" Winter pulled her frustrated sister close, teasing the juncture between her legs with two fingers through the fair white robe, "I think you know what's holding you back…"

"W-Winter!" Weiss yelped in surprise, "D-don't touch me there… that tickles…"

Winter turned Weiss around backing her younger sister up to the table onto which they'd previously set aside the spellbook, "Oh, I can do much better than that Sister… don't pretend you don't want it…"

Weiss blushed, averting her eyes from Winter's cleavage as the older sister undid her robes and pressed closer, "I-I need to concentrate on my… my magic…"

Winter slipped her hand into Weiss's robe, "What could be more magical?" she asked, "Think of it as symbolic of opening yourself - letting more in… I can't rightly express to you how much easier magic became after I was rid of mine…"

"R-Really…?" Weiss asked wide-eyed, thighs trembling, her virgin womanhood quivering beneath Winter's touch, "H-How…?" She fumbled behind her for purchase on the table, lest she fall backward.

"Simple…" Winter spread Weiss's folds with two fingers, causing the younger witch's breath to hitch, "By opening your body, You can channel more power – as though you've opened a floodgate – and all it'll cost you is a little pleasure…"

Weiss's back arched slightly as she felt her sisters fingers inside her, "O-Oh… Sister… It feels…s-so good…" She moans, fingers twitching and palms slipping across the table top as her back slipped down, "O-Okay… t-take it…"

Winter smiles, a mix of lust and sincere, tender caring in her eyes as she lets her own robe slip to the floor, lifting a leg to rest her knee on the table beside her youthful and supple sister and grinding her clit against Weiss's thigh. She kissed Weiss 's cheek, then her neck, and her breast as she opened Weiss's robe as well, drinking in the sound of Weiss's moans of submissive bliss as Winter's fingers moved just a little deeper to reach Weiss's maidenhood….

"W-Winter…" Weiss moaned in lust as her sister's three fingers reached her core, "D-Do it!"

Weiss screamed in ecstasy and dulled pain as Winter's lips crashed against hers and her fingers breached her most private place. Nervous though she was, it wasn't as though Weiss hadn't fantasized about precisely this… Winter was just so beautiful… her skin so smooth.. and her touch so tender… and being together as sisters was bliss…

Weiss whimpered in pleasure as she arched her back and pressed her obligingly nude form to her more mature sister's, thighs trembling as her legs threatened to give out. Weiss let out a cry and bit her lip as Winter did the deed, and she slipped farther back, back hitting the cold wood of the table as the breath driven from her lungs by surprise, pain, and pleasure all at once, "W-WINTER!"

As her maiden's blood began to trickle down her thighs around Winter's fingers, Weiss's arms spread across the table as she gave herself over to the pleasure entirely, tears welling in her eyes. Not only was there the raw physical exhilaration of it, but Winter was right – the instant she'd been broken, she felt so much more power… It was like not only Winter's fingers were inside her, but that all the ambient energy around them – within their secluded castle, the chilled winter air, the forest that surrounded the grounds – had all surged inside her body at once and churned within her like a storm in the pit of her stomach. "Oh! Oh! OH FUCK!"

Weiss's back arched violently as she screamed, her pleasure gushing from her womanhood for the first time, her hands clenching into fists as, with the pleasure, the power permeated her body, and for one sublime moment, she almost felt her consciousness melt away beneath Winter's lips and touch…

Unable to restrain herself from taking her own pleasure from the way her sister squirmed beneath her fingers, Winter continued to reach inside her, running her own free hand up and down Weiss's twitching body. She groaned lustily into Weiss's lips as she felt her sister's petite legs wrap around her waist and clenched, younger sister holding the elder close, and Winter gradually moved down to nibble Weiss's lower lip, then sucked at Weiss's pert breasts afresh. She began grinding her clit against Weiss's folds now, drinking in Weiss's moans as the elder Schnee sister felt her own arousal trickling down her own thighs.

"Tell me sister…" Winter whispered huskily into Weiss's ear as the younger sister moaned, "Is it not everything I said it would be?"

"Y-Yes…" Weiss half-moaned, half-whimpered as her hips bucked against Winter's, "P-Please… more…"

"Of course…" Winter smiled into the crook of Weiss's neck, fondling the blossoming witch's breasts with both hands, "I can't tell you how long I've wanted to do this…"

"I just…" Weiss gasped, eyes squeeze shut as a fresh wave of pleasure flowed over her, "I wish that I could be… as… beautiful as you…"

"Shhh…" Winter whispered, taking Weiss's hand in her own and stretching their arms out across the table, "You're perfect…"

As the sisters entwined themselves in mutual pleasure though, even the more experienced of the pair let her awareness reduced to merely her own person and that of her sister, ignoring their surroundings, and indeed heedless of the arcane leather-bound tome against which their fingers were now brushing… On contact, power flowed from the distracted sister's fingers into the possessed volume, and the pages began to glow an eerie purple. It was only when the Grimoire snapped open of its own accord – rapidly flipping to a central page - and a menacing purple glyph appeared above the text that first Winter, and a moment later a disappointed Weiss finally took notice, but by then it was far too late….

"Weiss… run!" Winter ordered, wide-eyed as she attempted to cast a spell to contain the book, but it was to no avail; from the center of the unnerving glyph emerged a writhing black tendril of roiling darkness that lashed forward to bind Winter's wrist.

"W-Winter! W-What's happening!?" Weiss asked, trying to step away, heedless of her partial nudity, "What is that?!"

"We…" Winter grunted as she struggled, only to have her other wrist caught and bound by another tendril of the writhing darkness emanating from the book, "We woke it…"

Weiss stumbled, falling to the floor as her edging away took her off the edge of the table , but still he tried to shuffle away as Winter was caught ant one ankle and then the other, before being lifted from the floor, "Winter… what's it doing…?" She stammered in terror.

"Weiss! I said ru-MMMMM!"

Winter was silenced mid-sentence as dozens of amorphous black, shadowy tendrils erupted from the book, one of which curled around her head and plunged into her mouth, and her voluptuous body jerked in response. She wanted to run – to do as Winter told – but she was frozen to the spot in a mixture of mortal terror and rapture as she gazed upon her Dear Sister's beautiful, toned body writhing and jerking, thighs tensing… breasts bouncing and swaying as she struggled… Weiss wasn't certain when she'd begun touching herself, but by the time she had, she'd forgotten that she wanted to escape as she watched the tendrils violate her sister's body…

Winter squealed around the writhing shadows given physical substance that had forced its way into her mouth and down her throat as she felt still more members first bind, then spread her thighs in full view of her sister, and she felt a perplexing cocktail of shame and lust as she felt herself dripping with want – though whether it was for her sister or the undulating arms of the shadow that bound her, she couldn't say. All shame evaporated when she saw that Weiss, instead of fleeing as bidden, had shorn herself of the rest of her clothes and begin to finger herself as she watched from the floor… After that, it was replaced with envy that she couldn't do the same… Well, until her whole body spasmed as more writhing shadows were driven inside her, first into her shapely ass, and then her wanting vagina. She violently threw her head back in abject surrender, the roiling tendrils permeating her body and almost seeming to dissipate from their physical shape once within, slowly building within her toward a tempestuous climax as the wicked spirit that possessed the book dominated her inside and out. Penetrated in all of her sensitive orifices, Winter's vision blurred as her back slowly arched, the feeling of being filled steadily building as, unbeknownst to her, her womb began to bulge and her nipples stood firmly erect and on end as well. Her whole body felt hot and her chest grew tight as the spirit of the book played with her body until a little droplet of milk began to express from her left nipple, whereupon the tendrils reacted immediately, suckering onto her teats like leaches, the sudden sucking sensation at her sensitive peaks finally driving her over the edge, making her cum with a muffled scream.

Weiss's eyes watered as she vigorously pleasured herself to the scene, the sight of Winter's swollen belly managing to make her even more horny – until she felt something tickling at her foot…

"H-huh…?"

Caught with her hand between her thighs, Weiss was abruptly seized by the ankle and hoisted off of the floor, yelping in surprise as she was heaved aloft to dangle upside-down. Weiss struggled and thrashed, she trying to steady herself as her long, silvery-white hair only just brushed against the library floor. She was just too far to reach Winter, but that hardly mattered; all Weiss profited from reaching out was having her left wrist entrapped by the same tendrils that bound her sister.

"Winte-EEEEER~" Weiss cried at first in fright, but it rose to a squeal of base pleasure as she was violently penetrated from above – both her ass and quivering pussy spread by the undulating arms of shadowy power simultaneously, "S-So GOOD!"

Less thoroughly bound than her elder sister, Weiss flailed as the arcane members wracked her body with pleasure beyond what she'd have thought imaginable. Her thighs clinched around the semi-solid members, but that only intensified the experience, bringing still more tears of ecstasy to her eyes, unable to resist the urge, Weiss brought her free hand to her petite bosom as she hung there, overwhelmed, feeling her own nipple stiffen against her palm, and her breast seemingly plumping. She tried to curl up, as though by some means she could contain herself – maintain control – but both gravity and the swelling of her own stomach defeated her, and with a loud moan, she came as she slackened milk dribbling from her breasts and down over her face, which displayed nothing so much as bliss and sheer abandonment of any resistance, and then, just as quickly as the ordeal had begun, Weiss and Winter simultaneously arched their backs, cumming before the shadowy members abruptly evaporated and the book flipped shut of its own volition, leaving he sisters to fall to the floor.

And like that, they were left gasping on the cold granite flagstones, bodies restored to normal as the power of the Grimoire over them dissipated. Weiss fell onto her stomach in a heap, and Winter was dropped onto her back, thighs spread before Weiss's face. For a long moment, they whimpered and trembled in their mutual afterglow, bizarre as the experience had been, but before long they had to some extent recovered, sharing a gaze…

"T-That was…" Weiss began, still gasping.

"That, Dear Sister…" Winter asserted, despite her own still-heaving chest, "was why you must take care when using a Grimoire… If you don't control it, it will have its way with you… and they aren't always so… pleasurable…"

"B-but that was amazing!" Weiss enthused, crawling to embrace her sister on her hands and knees, pressing her face to Winter's smooth stomach just below her ample breasts.

Winter smirked as she ran her fingers through Weiss's hair affectionately, "Why do you think I keep it around…? Even so… I'm glad I could be here to share this first… experience with you… Believe me when I say that there will be many more to come…"

"Mhmm…" Weiss whimpered into her sister's breast, the phantom pleasure still throbbing twixt her legs, "But even before that… when you opened me… I feel so… so different… there's so much-,"

"Shhhh… Easy Weiss…" Winter cooed, holding Weiss close, their bodies entwined again now, though in warm comfort now rather than lust, "Rest now… I'll wager you'll be ready to test your new power in the morning…"

Weiss nodded, eyes fluttering shut as she used Winter's breast as a pillow, and there, naked upon the floor of their library, the sister's drifted off to sleep.