Chapter Text
Rias Gremory paced slowly across the ornate floor of the Occult Research Clubroom, her long crimson hair swaying with each measured step. Alone in the late-night silence, she allowed the rare crack in her composure to show-her striking blue-green eyes clouded with open concern as the weight of the upcoming Rating Game against Riser Phenex pressed down on her like never before. This was no mere contest of strength. It was the battle that would decide her entire future, her freedom from the arranged marriage she loathed with every fiber of her being.
She had poured everything into Issei's training, pushing her Pawn to his limits and beyond, believing in his growth and potential. Yet deep down, doubt gnawed at her relentlessly. It simply wasn't enough. Not against Riser's veteran peerage and his infuriating immortality. Time was slipping away, and she needed something-anything-to turn the tides decisively in her favor.
Rias came to a sudden stop near the window, one hand resting lightly on the generous curve of her chest. What more can I possibly do…?
Then a flash of timid red eyes entered her mind. Gasper. Her shy, reclusive Bishop, whose Forbidden Balor View held power that could shift any battlefield if only he could be coaxed out of his shell. Convincing him would be an uphill battle-his timidity ran deep, and drawing out true courage from him had always been a delicate task. But if she could build that confidence, unlock the strength he kept locked away… for her peerage, for their victory…
Her expression settled into resolute determination, the elegant lines of her face hardening with purpose. Her mind was made up.
Rias turned on her heel and left the clubroom, her heels clicking purposefully down the hallway of the old school building until she reached Gasper's door. She raised a gloved hand and knocked gently but firmly.
"Gasper? It's Rias. May I come in?"
From inside came a soft, hesitant reply. "…Y-Yes, Buchou… Please, come in."
Rias quietly opened the door and stepped into Gasper's dimly lit room. The curtains were drawn tight, leaving the space almost completely dark except for the soft blue glow emanating from his computer monitor. In the middle of the room sat his familiar cardboard box, from which a small portion of messy blond hair and wide, timid red eyes could be seen peeking out nervously.
She approached with slow, graceful steps, her voluptuous figure moving with elegant warmth as she knelt gracefully beside the box.
"Gasper… how have you been? Are you feeling alright tonight?" she asked gently, her voice soft and caring.
A quiet, stuttering reply came from inside the box. "Y-Yes, Buchou… I-I'm fine… Th-Thank you for coming to check on me…"
Rias smiled tenderly. "Good. I'm happy to hear that. You've been spending a lot of time on your computer again, haven't you?"
She let the light conversation linger for a moment before her expression became more serious, though still gentle.
"Gasper… I need to talk to you about the upcoming Rating Game against Riser Phenex."
She immediately noticed his small body tense up inside the box, his red eyes widening with anxious realization of why she had come.
Rias quickly shook her head. "I won't force you to do anything, Gasper. I promise you that." She reached out, carefully pulling his head from the box and pressing it softly against the warm, pillowy softness of her massive breasts. Her gloved hand gently stroked his blond hair in slow, soothing pets. "But I must be honest with you, my precious Bishop… If I lose this match and become Riser's wife… I cannot guarantee that your current lifestyle here will continue. The safety and protection I provide for you… everything might change."
Gasper's voice came out muffled and shaky against her chest. "B-Buchou… W-What can someone like me possibly do…? I-I can't even bring myself to leave my box right now… even though you're here with me…"
Rias quietly licked her lips, a faint hungry gleam flashing in her blue-green eyes as she leaned back just enough to look down at him. She then gazed directly into his eyes with the full commanding authority of his King.
"Gasper… Do you truly trust me?"
He answered with complete honesty, his voice trembling but sincere. "Y-Yes, Buchou… I trust you… more than anyone else…"
The moment the words left his mouth, Rias leaned forward and pressed her soft, full, warm lips firmly against his in a sudden, deep kiss that left the shy vampire completely stunned.
Gasper didn't know when it happened. One moment Rias's soft, full lips were pressed against his in a kiss that short-circuited every thought in his head; the next, the world had gone blissfully blank.
Now he sat on the edge of his bed, completely out of his box, legs spread as Rias Gremory knelt between them on the floor. Her crimson hair spilled over her shoulders like liquid fire, and her school uniform jacket lay open, white blouse unbuttoned and pushed aside. Her massive, heavy breasts were fully exposed-pale, perfect, and glistening faintly under the soft blue glow of the computer screen. They were wrapped tightly around his cock, the soft, warm weight of them smothering every inch except the flushed, throbbing head that poked out from her cleavage.
Rias's blue-green eyes gleamed with delighted surprise as she looked up at him. "Ara… Gasper," she purred, voice low and velvety, "I never imagined my beloved Bishop was hiding something so… impressively large." She squeezed her breasts together tighter, sliding them slowly up and down his length in a smooth, rhythmic paizuri. "Look at how perfectly it fits between them… mmm, so hot and hard already."
Gasper's hands fisted the sheets, his timid red eyes wide behind his glasses, cheeks burning crimson. "B-Buchou-! I-I can't-ah-!" He tried desperately to hold back, but the sight of Rias's voluptuous chest working him, the slick friction, the way her tongue darted out to teasingly lick the leaking tip every time it emerged-it was too much. His hips jerked once, twice, and with a broken whimper, he came hard.
Thick, heavy ropes of cum erupted from him, painting Rias's breasts, collarbone, and chin in messy white streaks. The sheer volume surprised even her; her eyes widened slightly, a faint daze crossing her elegant features as she felt the warm, sticky flood coat her skin.
Gasper gasped, mortified. "I-I'm sorry, Buchou! I got you all dirty- I couldn't hold it-!"
Rias only smiled, calm and sensual. She scooped a generous amount of his release onto her fingers, then sensually licked it clean right in front of him, savoring the taste with a slow drag of her tongue. "Mmm… no need to apologize, Gasper. That felt wonderful… and there was so much of it." She licked another finger clean, still looking slightly dazed by how much he had given her. "Good boy."
She rose gracefully, breasts still glistening with his cum, and climbed onto the bed. Turning away from him, Rias got on her hands and knees, arching her back and lowering her upper body until her cheek rested against the sheets. The motion hiked her skirt up high, presenting her perfect, panty-covered ass to him-black lace stretched taut over her full cheeks, the fabric already slightly damp.
Looking back over her shoulder with a small, encouraging smirk, she said softly, "It felt good, didn't it? Then keep going. You can do whatever you want… explore whatever you want. Touch me. Use me. Just… don't put it inside me." As long as I give no clear signal of full intercourse, the alert would never trigger.
Gasper hesitated only a second before his shyness began to melt under her permission. He crawled forward, hands trembling at first as he grabbed two generous handfuls of her ass, squeezing the soft, plush flesh. Growing bolder, he gave one cheek a light smack, then another, watching it jiggle. Rias let out a quiet, pleased hum, gripping the sheets tighter.
Emboldened, Gasper pressed his still-hard cock between her cheeks, grinding along the lace-covered valley. He squeezed her ass around his length, thrusting faster, the slick friction driving him wild. The feeling was addictive, hot, soft, and completely at his mercy. He rutted harder, smacking her ass again as his hips snapped forward with more confidence.
Rias clutched the bedsheets, biting her lip as the force of his thrusts rocked her forward. "That's it… good boy… use me like that," she murmured encouragingly, voice steady even as her body jolted with each powerful grind.
Gasper lost himself completely. His cock throbbed between her cheeks, sliding faster and faster until he came again with a choked cry. Thick, endless spurts erupted across her back, soaking the back of her school uniform, splattering up her spine, and even reaching the back of her head, staining strands of crimson hair white. Rias could feel every heavy pulse, the sheer volume and heat of it making her shiver.
She stayed exactly where she was, breathing just a little heavier, ass still presented to him as his cum slowly dripped down her skin. How can he cum so much? And for his size, it's... "G-Gasper?" Rias pushed herself up a bit and looked behind her as Gasper pulled down her panties
"Gasper- wait, what are you- ?"
Before she could finish, he pressed the throbbing head of his cock right against the tight entrance of her ass. His voice was no longer timid; it came out low and breathless, laced with newfound hunger. "If… if it's here, Buchou… It's still fine, right?"
Rias's eyes widened. "Gasper, no- not there, you mustn't-"
But he didn't wait. With one firm push, he slid inside her, stretching her in one smooth thrust. A loud, involuntary moan tore from her throat, her body jolting forward on the bed as her blue-green eyes flew wide in shock.
"Gasper- ahh! Stop- you have to stop right now-!"
He didn't. His smaller hands gripped her full ass tighter, fingers digging into the soft flesh, and he began fucking her roughly, deep, frantic strokes that rocked her entire voluptuous body forward with every snap of his hips. Rias clutched the sheets, trying to form words, but each powerful thrust stole her breath. She realized with a dazed thrill that she had awakened something primal in her usually shy little Bishop; the timid boy who hid in a box was gone, replaced by raw, desperate lust.
Gasper smacked her ass hard, the loud crack echoing in the dark room, leaving a faint red mark blooming across one pale cheek. He kept pounding, lost completely in the feeling, his mind flooded with every hentai and eroge scene he had secretly watched. The pleasure was overwhelming. He leaned over her back, grabbing both of her wrists and yanking them behind her, pulling her arms back like reins while he drove into her even harder.
"Say it, Buchou… admit how much you like this!" he panted, voice shaky but commanding.
Rias's mind was spinning, the intense pleasure making it impossible to think straight. Her massive breasts swung wildly beneath her with every rough thrust, nipples brushing the sheets. "I… I like it- ahhn! It feels so good!"
Gasper's eyes darkened with lust. "Then become mine, Buchou. Say you're mine!"
Rias's voice cracked into a loud, broken shout as another powerful thrust sent her over the edge. "I'm yours-! I'm yours, Gasper-!"
He lost all control. His cock throbbed violently inside her ass as he came harder than ever before, flooding her with thick, endless spurts of hot cum. The sheer volume was overwhelming, pulse after pulse filling her until it overflowed, leaking down her thighs while Rias's body trembled and finally went limp. Her vision blurred, pleasure and exhaustion crashing over her completely.
Gasper collapsed right on top of her, still buried deep, both of them passing out together in a sweaty, sticky heap on the bed.