The Emiya household buzzed with the rhythm of daily life. Artoria Pendragon had retreated to the living room after a tense strategy session with Shirou and Rin. She paced the tatami floor while contemplating their previous discussion. But as she pondered their next move, little did she know, a sinister danger lurked not from an external foe, but from an “ally” within.
Medusa, the Rider-class Servant who seemed to have allied herself with the group had been watching Saber from the shadows of the adjacent hallway. The Servant had been plotting something nefarious; wanting to indulge in a whimsical experiment. Drawing on her Mystic Eyes of Petrification, she channeled a twisted variant of the curse infusing it with a special mana to shrink rather than turn her target to stone. It was a hidden art, not even known to her Master. It was one she’d refined in secret for a moment like this. With a faint smile, she removed her blindfold just enough to focus her gaze on Saber, whispering an incantation under her breath. The air shimmered with forbidden magic.
Saber clutched her head as vertigo struck. “What… is this?” she gasped, her voice echoing oddly. The world warped around her, furniture looming like mountains as her body dwindled in size. In seconds, she was reduced to a mere few inches tall. Disorientation flooded her mind; had Caster laid some trap? Or was it another enemy magus infiltrating the Emiya household “Shirou! Rin! I require aid!” she shouted, but her voice was a pathetic squeak. Stumbling forward, she scanned her new gigantic surroundings, heart pounding with confusion. She needed to reach her Master before something terrible happened.
Moments later, Rider stepped fully into the room, her high-heeled boots thudding authoritatively on the floor. She reveled in the sight of the miniaturized knight scrambling below, her lips curving into a predatory grin. “Oh, Saber? How delightful to see you like this…” she purred, her voice a sultry whisper. The act of shrinking her had already stirred a thrill in Rider’s core. Saber looked up in wide-eyed bewilderment as the colossal boot descended. “R-Rider? Halt! Some curse has-” Her plea dissolved into a scream as Rider’s foot came down in a quick, heavy stomp, seemingly unintentional, but with the full force of her weight behind it. The impact came quickly, the sleek black leather sole slammed onto Saber like a meteor, crushing her tiny body in an instant.
There was no time for escape; Saber’s form compressed beneath Rider’s foot, her body crumpling with a wet crunch. Warmth spread as her flesh yielded to the boot’s ridged tread, bones snapping and viscera squelching into a smeared paste. The sensation rippled up Rider’s leg, the subtle give of something fragile breaking under her heel, mingled with the faint tang of mana residue. Rider’s breath hitched, a flush of arousal warming her skin at the pleasure of the act.
Curious now, Rider lifted her foot back up, tilting it to inspect the sole. There, stuck firmly to the bottom, adhered by a sticky mix of crushed remains and smeared blood was what was left of Saber. Rider’s fingers traced the mess idly, feeling the lingering warmth and slick texture, a soft chuckle escaping her lips. The proud knight, reduced to a mere stain on her shoe. She scraped some off with her nail, savoring the residue, her mind already wandering to the possibilities.
Rider’s appetite was far from sated. This shrinking spell was hers to wield, and the Emiya household teemed with potential. Shirou in the kitchen, Rin in her room. How amusing it would be to shrink them too, guiding their tiny forms to “serve” her in more intimate ways. With a wicked gleam in her covered eyes, she loosened her blindfold and strode onward, Saber’s remnants still stuck to her boot, leaving faint, incriminating smears on the tatami. Rider planned to have so much more fun tonight…

