"Holy Jesus. WHAT the fuck is that? What is THAT?"
- R. Lee Ermey throughout this entire fanfic starting from the opening sentence
"How embarrassing."
- Mike Stoklasa
The situation was quickly deteriorating into what Seikou Nagaoka would call a "Ghastly Spot" for Rin's defenseless uterus. She was toppled over on her rump on the stairs leading up to Fuyuki Monument Library, the fallback point for many elite witches living in modern Japan. All of her primary senses were dazed, her awareness was non-existent, and her stationary hips might as well have been two sides of pork flopped over a concrete stove that was getting ready to cook.
The city skyline over her head burned in crimson fire. The stairs and sidewalk under her slippers rippled in waves of living darkness. Her knees were slightly parted in the shadowy gloom. The site of her final defeat against the immortal, never-ending, micro-sized hordes of Zouken Matou become an improvised baptismal font.
She was a spectacular magic fighter, a fiercely stubborn fighter, and she was roughly a hundred times bigger than any one of soldiers from the opposing side. But they attacked her in relentless stridulating waves and their numbers multiplied into infinity, while she was only mortal. Even the most skilled and powerful Magus fighting the same pesky and trivial opponent over and over again had to run out of energy at some point.
When she inevitably crashed rear-first on the stairs in exhaustion, one of her last conscious thoughts was the sheer terror of knowing what would happen to her. What would become of her valuable, renewable, magic-filled, unguarded body. How they would excavate her and harvest her as a natural resource, just like how she watched it happen to her sister Sakura. The most contemptible part of it was how she'd been dumped here so the lowest-ranking invaders making an early Dosojin festival out of her city could finish her off.
She spent that last fleeting second of awareness cursing her arcane heritage. If she'd been born in a normal family, and she was just another mundane mortal, those things would have just snapped all her bones and melted her as soon as they got hold of her. That would have been a better fate compared to what the legion had planned for her.
In a less urgent time, in a place with more privacy, Rin's induction into the terrible art of necromancy would have been administered by (mostly) human sages who worked slowly and paid close attention to how much of what went where at the right time. But the binding ceremony happening tonight wasn't going to be neat and formalized, with plenty of Magus medics making sure the process was completed safely. This was going to be ravenous, feral, and messy. Some of the most valuable magic knowledge in the world was stored in the abandoned archive behind her, but the only power and knowledge these creatures were interested in was located within the three-inch curvaceous void where her thigh stockings ended.
They quivered around her legs, where they were mostly camouflaged by her dark grey stockings. They crept over the natural round bowl formed by her resting waist and hips, slithering under the inviting pleated vanity drapes of her miniskirt. Her fresh sweat from the battle made it even easier for them to complete their journey when they were sliding across her skin. Some of them slimed their way all the way up to her shoulders and neck, where they blended into her dark hair curls. Their tiny quasi-sentience contemplated twisting her head off and ending her completely, but that was only a last resort if her body rejected their inhabitation. Her mana well would spoil and die without the brain attached to it.
There was no denying the horrendous little creatures were going to become one with Rin. By many accounts, it looked like they were always supposed to be part of her.
Nylon shuffled quietly in the lurking darkness on the library stairs, while cotton and silk were slowly but steadily pulled apart. The elegant black ribbons on her panties severed their last threads and gave way to the armies of tiny crawling monsters. Countless infiltrators quickly went to work building a new hive inside their reluctant queen, operating in the dense shadows cast by the smoking sky, the foreboding mist wafting over the ground, and Rin's stylish miniskirt.
Her resting and gently breathing body didn't flinch in the slightest when the intrusion first began. She was just a disabled vessel that surrounded the resources they really wanted. Their small size and worm-like agility made them perfect for traversing the interdimensional channels that linked the mortal world to the demon realm, and it made them perfect for traversing Rin's cervical channels.
"Nugh." The raven-haired sorceress muttered in her sleep, but not as an expression of disgust. It was her body's spontaneous reaction as it drastically grew colder from the inside out.
The collapsed Magus could do nothing to stop them from claiming their nest. Her consciousness was anywhere but here, this overrun urban hellhole where her exhausted body was becoming an auspicious home for the same demons she failed to exterminate. She was paralyzed by numbness and a strange sense of relaxation. She may have even felt a little ticklish. But the nerve impulses from her reproductive system were practically screaming "HELP MEEE!"
An ominous streak of lightning crackled through the murky darkness. But the darkness wasn't in the sky. It was deep inside Rin.
She silently opened her eyes for the first time since she lost her personal war. Her eyes were two lifeless black discs surrounded by the burnt orange auras of dying suns. The lower half of her body made a heaving motion separate from her upper half, and she lifted herself onto her feet so she could dust the concrete and insect slime off of her thighs. Finding her center of balance was an awkward task, and she definitely felt a little more bottom-heavy than she used to. But at the same time, she wasn't used to this body at all. This was an entirely new experience for her.
Outwardly, she appeared to be a vibrant young woman with a relieved look on her face as she casually brushed rivulets through her long black braids. Inside the plague-ridden Tohsaka temple, it was complete chaos as her organs endured an intense stretching and twisting routine. The hollow sanctuary where mortal children were meant to grow was engulfed in a wild garden of black vines and roots that coiled on millions of microscopic villi legs. But all things considered, it wasn't too bad. Her physical health and her high magic proficiency helped her guts adjust fairly quickly to their new normal condition.
Rin smiled pleasantly as she felt her mana core repairing and reinforcing itself under her red sweater. She'd turned into a constant vicious Satanic orgy, and she never even showed it.
When she confidently sauntered down the broken concrete stairs that had become her grave mound, it was with a noticeable boost in her dark magic aura and a stark decrease in undergarment armor. She'd have to get out of these grimy things and buy some new clothes, once she finished ripping the souls out of a thousand or so mortals.
The new Rin was a legion of miniaturized Nether-beings controlling the corpse of the old Rin. A passive stream of fire magic kept her blood warm. A shield of lightning magic gave her a stable heartbeat. The only offspring she'd ever be able to nurture were the Crest demons.
She touted her victory with only two small, highly suggestive words.
"Nice snack."
Author's note: Ehh? Ehhhh? Ayyyyye. You could say some bad witchcraft got inside Yamashiro's aircraft.
Maybe you could also say Rinashiro… is yandere for the alien monsters assimilating her. Eh?
Fuyuki City isn't a real location, and as far as I know, Fuyuki Monument Library isn't connected to anything from Fate or Muv-Luv. I just laid out a setting that I thought sounded cool and would be serviceable for Rin's demise. And because I was thinking about Ghostbusters II again.
Really lovin' how I used the word "auspicious" there. The name "Zuikaku" translates to "auspicious crane." Rin's the kinda bird you take home and use as an incubator for interdimensional parasites.
Naw, naw. Now see, "Territorial Modulations" was a Teito Moyu post-crash massacre scene that crept into becoming a Rin worm fanfic. "Tohsaka Moyu" is a Rin worm fanfic that's subliminally trying to be a Teito Moyu post-crash massacre scene, for people who understand the awful references. They're completely different things.
This fanfic just sort of came out of nowhere in the past couple days. But I've been pretty okay/ambiguous/could-have-gone-a-lot-worse to the Mints lately (i.e. "Teacher's Manifesto," "Mai Otome Freedom," and "Tribadic Militants" forming the Erstin Kx trilogy), so I shoulda figured there was another fanfic coming up where something grungy happens to Rin. It's a recurring sub-genre in some of my fanfics, where Mint is the White Mage and Rin is the Black Mage. I write a Tales of Phantasia story where something "good" or at least "okay" happens to Mint, and this will be back-to-back with a schizophrenic Fate story where something appalling happens to Rin. And yes, I'm tentatively calling Erstin Kx "a Mint" for the purposes of this analysis. She's definitely on a more aggressive branch of the evolutionary Mint tree, and I don't envision her with Mint's voice actress. But her mom is an official certified Mint*, and her main symbolic trait is how she (one way or another) shares her magical girl powers with other people to make them stronger, like she's a cleric casting buffer spells. But if you really think about it, Erstin Kx is just a big worm who hung out inside a Mint character for nine months after a mostly dead guy created her. And she's certainly a ferocious battle demon. You might even say she's a "Mint" who's got a little bit of "Rin" in her. :)
* Official Certified Mint: Quiet but intelligent Junko Iwao-type girl dressed mostly in white with low Attack stats and she hates combat.
You know how the Power Rangers comic has that one alternate timeline where Tommy went completely bonkers after the events of Green With Evil, and he broke into the Command Center and murdered Jason when they were trying to turn him into the White Ranger (this was later retconned but let's stick with it), and he stole the white Power Coin so he could turn himself into the Evil White Green Ranger who occasionally cosplays as Sephiroth? And you know how this absurd mess of tryhard edgelord grimdark manchild fanfic aesthetics somehow ends up working together in an absolutely flawless way? Yeah, it's kinda like that.
Should this be considered more of a Gundam SEED crossover instead of a Muv-Luv crossover, since they hijacked the mecha after they devoured the pilot? DOHOHOHO. (See, I'm trying to make a pun about Gundam SEED overusing the "hijacked mecha" cliché. It's meant to be funny. You're supposed to laugh at it.)