"I CAN FEEL YOUR INSIDE. SURRENDER TO FATE."

- Vertueux

"A Rin without thighhighs is like a Ninja Turtle without a bandana."

- GameFAQs proverb


The Worm Mother was in paradise tonight. Her shoulders sank into the brim of the Imbuing Bowl as her hands held the sides of her red flustered face. Her hips squirmed in the cistern's slimy darkness with her ankles propped over the edge and her black slippers gleefully flailing in the air. Her dress and her thigh highs were torn and disheveled from a battle she hardly remembered fighting. The frenzied sounds her voice made as she writhed in ecstasy were a mixture of panting, giggling, and groaning.

Sakura's motionless white-haired body was lying in the crumbled pavement several yards away, still smoking from Rin's final magical attacks. Poor sis. She was free from Zouken's curse, but she'd never again get to experience the fun of being a fertility vessel fostering endless hives of pill-sized lust demons.

Rin only had a few seconds to feel sorry for her sister before Zouken's disciples crept out the shadows behind her. They surrounded the battle-weary Magus, swept her off her feet, and summoned an Imbuing Bowl out of the pavement right underneath her back. They didn't have years of patience to train a Worm Mother the same way it had been done with Sakura, and they worked swiftly and ruthlessly to turn Rin into Sakura's replacement on the spot.

Rin lost herself the instant the first swarm of crest demons cascaded across her pelvic floor. The army of robed weirdos standing around the cistern were now only a blur of featureless black shapes in the corners of her foggy, feverish vision. She just lounged in the shallow black tub only big enough to contain a single Tohsaka as the unnamed cultists filled the structure with goblets of feral crest worms that seemed to materialize out of thin air.

The constant dark red blush shading Rin's face said she was ashamed without really feeling shameful. Her ankles draped over the lower end of the Imbuing Bowl freely without any restraints or magic vexes coercing them to spread apart, and the tiny raised tips of her breasts were very clearly stretching the front of her red sweater. There was no questioning her natural human hormones had accepted this wildly unnatural predicament almost immediately. She was going to be converted into a veritable slug sanctuary under a stoplight in the busiest shopping district in Japan, and she didn't even care.

"Mm! Mmmm! Mmmmm-more!" Rin gasped in a bossy tone to the robed disciples hovering around her stretched out feet. Her hands balled into fists against her blushing chin as her waist swayed anxiously in the base of the dark cistern. The priests complied with her commands zealously, chuckling in cloaked voices that were drowned out by her one-woman chorus of delighted high-pitched moans.

Another dozen goblets were poured around her hips, and her cheerful screams immediately jumped another octave. The bottom half of her body was nestled in the deepest part of the concave stone basin, so the demons only had one viable place to go once they were in the bowl with her. Nothing made her happier than knowing she was going to be the feracious spawning ground for thousands of squirming Hell-children. Her womb was bathed with worms.

The Infusing Ceremony may have lasted six more hours, or it may have only taken another thirty seconds. Rin's perception of time wasn't exactly accurate at the moment. In fact, her perception of anything other than the overwhelming and otherworldly euphoria happening deep in her belly was practically non-existent. She was so glad she never had a chance to relax the nerve signals in her waist before the disciples went about their business.

Rin suddenly screamed louder and with more lascivious joy than she'd ever screamed before. The entire city block exploded in a dome of pitch black light.

When it was over, she was a very different Rin. Inflamed black veins crept across the exposed parts of her face, hands, and thighs (and probably all the other parts still covered in her clothes), signifying the demons' influence had propagated out of her maternal center and spread through the rest of her body like magic circuitry. Her long sweaty hair was tangled in black and white streaks, signifying the strain of the Infusing Ceremony had irrevocably altered her. The soaked ribbons in her braids clung to the sides of her head like sloppy lopsided cat ears.

She tried to flip up off her back and sit on the edge of the cistern in a single elegant maneuver, but her legs were flimsy from all the odd changes still happening inside her center of gravity, and the move come off more as a clumsy flop than a flip. The robed disciples caught her by her arms before she fell completely and helped her to her feet.

Rin grumbled in exhaustion and slight embarrassment. She straightened the battle-worn hem of her sweater as best she could and patted down the front her miniskirt once she was standing up. Couldn't let it be too obvious there was a world of incomprehensible chaos happening just a couple inches underneath those black pleats. Her possessed pelvis felt like it was constantly dancing in a separate dimension from the rest of her body, but at least now she never had to worry about running out of mana after long fights. Her magic pool was constantly renewing itself internally.

Her hands pressed against the back of her skirt until her butt finally stopped wiggling. She let her arms slide into a stationary position at her sides with a satisfied grunt.

One or all of the disciples asked her a question as their shadows aligned around her in a circle.

"The crests are safe again. How do you feel, Vessel?"

"Full." Rin brushed her lips with the nail of her index finger, exhaling in a fanged purr.


Author's note: I think she likes it.

Author's note 2: The early production title for this fanfic was "Puella Resumed."

Author's note 3: This sure is an improvement compared that time Kana Ueda was trapped in a crashed mecha screaming about giant bugs coming to eat her while raunchy Kumi Koda music played in the background.

Author's note 4: Every time I post something like this, I always get someone telling me "That's not how the Crests work, stupid." And the response in my head is always "Your lore is Laffy Taffy to me and this is an AU in a franchise that already has like four million AUs."