I just love writing Izzy x Mimi; also, this is another story inspired by rule34 fanart of paccu-san.

Izzy rubbed his tired eyes and leaned back in his chair, stretching out the kinks that had formed from hunching over his laptop for hours on end. His latest project was proving more complex than he'd anticipated, and despite his brilliant mind, even a prodigy like him had limitations. A soft knock at his office door provided a welcome distraction.

"It's open," he called out, expecting one of his research assistants with an update or inquiry. Instead, it was his girlfriend in a trench coat, that she tossed away as soon as she had closed the door right behind her. His jaw nearly hit the floor at the vision that walked inside.

Mimi wore a lace bustier that struggled to contain her ample cleavage, along with a G-string that left little to the imagination. Black garters and thigh-high stockings encased her endless legs, and red stilettos added another few inches to her already statuesque frame. Her strawberry -blonde hair was artfully tousled, and heavy makeup smouldered in her eyes.

"I thought you could use a break, darling," she purred, locking the door behind her. "You've been working far too hard without any...recreation."

Izzy could only gape as Mimi slowly circled his desk, her hips rolling with each stride. When she leaned over to give him an up-close view of her deep cleavage, he made an unintelligible squeaking sound.

Mimi chuckled. "Cat got your tongue? Let me help you unwind..." Her hand slid up his thigh and caressed the growing bulge in his slacks. Izzy gasped and gripped the arms of his chair.

"W-wait!" he gasped, even as his traitorous body responded to her charms. "We r-really shouldn't...oh dear..." His words dissolved into a groan as her lips found their mark through the fabric of his slacks.

"Relax darling, no one will know our secret," Mimi purred, glancing up at him with a sultry smile. She made quick work of his zip, freeing his straining manhood. Izzy shuddered at her touch, her featherlight strokes sending shockwaves through his body.

"You've been cooped up far too long," she crooned, kissing the tip teasingly. "Let me take the reins for a change." Without further preamble, she took him fully into the velvet warmth of her mouth.

Izzy cried out again as Mimi took him in even deeper, her lips forming a tight seal around his throbbing length. She swirled her tongue expertly around his tip with each upward stroke, eliciting gasps and moans from the normally reserved genius.

His hips rocked helplessly into the wet heat of her mouth, beyond thinking now, lost in an ecstasy like nothing he'd ever known. One hand gripped Mimi's soft hair, guiding her movements as his climax approached at a dizzying pace.

But she wasn't finished with him yet. Pulling back until just the head remained between her lips, Mimi began to hum, sending vibrations coursing through his most sensitive flesh. Izzy screamed; back arching as white-hot pleasure threatened to consume him.

Through lidded eyes, he watched her work, her own eyes shining with lust and satisfaction at seeing him so thoroughly undone. That's when he knew he couldn't last much longer under her exquisite ministrations.

"M-Mimi! I'm going t-to c-cum!" Izzy cried out in desperate warning, his hips stuttering erratically as sweet release threatened to overwhelm him.

But Mimi only took him deeper, relaxing her throat to take his full length as his orgasm crashed over him. The first spurts of his seed shot straight down her welcoming throat. She moaned around his pulsing member, sending delicious vibrations up his spine.

Wave after wave, Izzy shuddered, eyes rolling back in his head as he emptied himself into Mimi's hungry mouth. Still, she swallowed hungrily around him, determined to wring every last drop of pleasure from his quivering body.

Only when he was completely spent did she slowly pull off with an obscene pop, a satisfied smile on her well-kissed lips. Izzy collapsed back into his chair, limp and sated beyond belief. His rapid breathing was the only sound breaking the silence as post-coital bliss suffused his soul.

Izzy lay limp and spent in his chair, certain Mimi had wrung every last drop of pleasure from his exhausted body. But as she gently drew her hand along his still-sensitive length, he realized with a jolt she was far from finished.

"M-Mimi, please...I couldn't possibly..." he protested weakly. But his traitorous manhood was already beginning to stir under her deft ministrations once more.

Mimi simply smirked up at him. "The night is still young, darling. And I've barely had my fill of you yet." Without warning, she bent to draw him back between her perfect lips.

Izzy cried out at the sudden burst of sensation, hips bucking helplessly into her welcoming mouth again. Mimi hummed in approval, picking up speed and suction as he swelled rapidly to full hardness once more.

"You recover so nicely," she purred, never breaking the rhythm of her bobbing head. "Such stamina...I think I'll have to test your limits tonight."

Mimi took him deep once more, eliciting a guttural moan from Izzy as he neared his peak. She withdrew with a wet pop, gazing up at him through hooded eyes.

"Come now, nerdy boy, don't you think it's time you take charge?" she teased in a sultry tone. "Show me what you've got."

Izzy blushed fiercely, still overcome with lust and desire. But the challenge in Mimi's eyes bolstered his courage. In one swift motion, he lifted her in his arms, drawing a surprised gasp.

With a groan, Izzy complied, bending her over his desk and hiking her thighs around his waist. At last, he would show his girl just how much stamina a nerd could muster.

Izzy's breath caught at the enticing sight before him - Mimi leaning forward on his desk, legs spread in eager invitation as she flaunted her glorious curves. He ran his hands slowly up Mimi's silky thighs, bending to press hot, open-mouthed kisses along her spine.

She shivered pleasurably. "Izzy, please...I need to feel you inside me!"

Izzy's hands roamed Mimi's lithe curves appreciatively before finding the tie sides of her flimsy thong. With nimble fingers, he parted the delicate silk, baring her glistening sex to his hungry gaze.

Mimi mewled and ground her hips against him, the barest touch sending sparks of need shooting through her core. "Please Izzy, I need you..."

A guttural groan escaped Izzy's throat at the intoxicating sight before him. With practised skill he caressed her slick folds, teasing her entrance expertly until Mimi was writhing and whimpering for release.

Only then did he position himself at her entrance once more, using the tip of his straining manhood to part her delicate petals. "So wet and ready for me already, love," he crooned, nipping at the shell of her ear.

"Only for you, nerd," Mimi gasped, impaling herself fully onto his rigid length with a wanton cry. "Now claim what is yours!"

Izzy circled his hips slowly, savouring the feel of Mimi's tight heat sheathing him fully. She whimpered and rolled her own hips impatiently, desperate for friction.

He withdrew until just his tip remained inside, eliciting a pleading mewl from Mimi. Then, with excruciating tenderness, Izzy slid back in to the hilt.

Mimi cried out as he set a maddeningly slow rhythm, grinding against her in small, shallow circles. Izzy kissed a trail down her back, nipping and soothing each patch of skin with his lips.

"You feel so perfect wrapped around me," he breathed, fingers finding her swollen clit. He began to roll the sensitive pearl between his fingers, applying the perfect pressure to send jolts of pleasure through her core with each pass.

Mimi cried out and pushed back against him, seeking more of the delicious friction. Izzy quickened his ministrations, rubbing tight circles around her slick bud in time with his deepening thrusts.

She was reduced to a quivering mess beneath him, her stomach coiling tightly with each brush of his fingers. "Izzy, please don't stop!" Mimi keened, feeling herself teetering on the edge of release.

It was not enough for Mimi, she needed more; Mimi spun with a predatory gleam in her eyes. Without warning, she pushed Izzy back into his chair, climbing swiftly into his lap and impaling herself on his still-rigid length.

Izzy cried out in surprise, hands flying to her swaying hips as she began to ride him with abandon. Mimi threw her head back, long hair swirling around her shoulders as she rolled her hips in tight figure eights.

"You've awakened the beast within me, darling," she growled, snapping her hips down to take him to the hilt. "And I'll not be satisfied until you're spent completely."

Izzy gripped Mimi's swaying hips tightly, fingertips surely leaving marks upon her flushed skin. But she paid it no mind, lost to the euphoria of using his body so fully for her own gratification.

Mimi bounced relentlessly upon his throbbing length, greedy sheath pulling him in so deep with each downward roll that Izzy was certain she'd swallow him whole. Her tight channel clenched and rippled along his cock in a sensual massage, always pulling him further under her spell.

Izzy could only thrust up to meet each powerful movement, chasing the exquisite tension coiling low in his gut. Mimi's taut breasts jiggled enticingly before his eyes with every bounce, nipples pebbled and begging for his mouth.

He obliged, drawing one tight bud between his lips to tongue and suckle desperately. The added stimulation sent Mimi keening, increasing her fervour tenfold as she bounced upon his cock like a wild thing.

Izzy was helpless against the onslaught of sensation - her silken walls gripping him so snugly, her sopping heat gliding along his length with such practised skill. He knew he couldn't last much longer under this exquisite torture.

With a guttural groan, he thrust up hard, releasing rope after rope of his essence into Mimi's molten depths. She clenched around him mercilessly, prolonging both their shared rapture until they collapsed in a sweaty, sated tangle.

Mimi lay panting atop Izzy's heaving chest, feeling utterly spent yet deeply satisfied. His seed still pulsed within her clenching channel, joining their bodies in the most intimate of ways.

She lifted her head to gaze down at him fondly, delighted by his flushed, debauched expression. "My my, darling, that was quite impressive," Mimi purred, tracing idle patterns across his sweat-slick skin.

Izzy laughed breathlessly, wrapping his arms around her slender waist. "And you, love, have once again awakened something I never knew existed within." He lifted his head to capture her lips in a searing kiss, tasting their mingled essence upon her tongue.

Mimi hummed into the kiss, nipping playfully at his bottom lip as she withdrew. "Such a good boyfriend deserves proper satiation. I think you've still got some stamina left in you, darling."

She shifted atop him meaningfully, feeling his manhood already beginning to stir once more. Izzy groaned at the delicious friction, his own hunger rekindling swiftly at her ministrations.

"You'll be the death of me, Mimi," he moaned, rolling them so she lay cradled beneath him. Mimi threw her head back with a peal of delighted laughter, wrapping her legs around his waist eagerly.

"Then die a happy man," she challenged, raking her nails down his flexing back. "And spend your last in bringing your girlfriend to new heights of ecstasy!"

Mimi's challenge reignited Izzy's passions like a wildfire. With a growl he lifted her lithe form, spinning to deposit her upon his desk with careless abandon.

She sprawled willingly, legs falling open in wanton invitation. Izzy stood for a moment, drinking in the glorious sight before him - Mimi's flushed curves spread like a decadent feast, glistening pink folds still fluttering around empty air.

"You test me so, love," he rumbled, stepping forward to position himself at her entrance once more.

Mimi laughed breathlessly. "And you rise to my every challenge, darling. Now claim your rightful place!" With that, she hooked her heels around his waist, dragging him forward to bury himself to the hilt in one deep thrust.

They both cried out at the exquisite joining of their bodies, lost to the primal dance as old as time. Izzy set an unrelenting pace, hips pistoning wantonly as he plunged into her dripping core over and over.

Mimi met him stroke for stroke, hands running down his flexing back to urge him to let go. Her electrifying touch only spurred Izzy on harder, faster, determined to send his girlfriend flying off the edge into bliss.

Her walls rippled deliciously around him, pulling him ever closer to the abyss. Izzy changed his angle slightly, seating himself even deeper within her molten sheath. Mimi keened as he brushed that secret place within, sending sparks of ecstasy shooting through her veins.

"There, nerd, right there!" she pleaded, wanton curves undulating shamelessly to pull him in harder. Izzy was lost, focusing only on wringing every last cry of rapture from Mimi's lips until they both shattered in a kaleidoscope of light.

Mimi writhed and bucked beneath Izzy wantonly, chasing her peak with abandon. She could feel the tension coiling impossibly tight in her core, ready to unwind in a cathartic explosion.

"That's it darling, don't hold back," she gasped between frantic kisses, nails raking red lines down his flexing back. "Give it to me, all of you. I want to feel you let go completely inside me."

Izzy's movements became frantic, hips pistoning with wild abandon as he neared the edge. Mimi met him stroke for stroke, her greedy sheath milking his length for all it was worth.

Mimi was reduced to an incoherent mess beneath him, hovering on the brink. With a few more deep thrusts, she toppled over the edge, walls clamping down on Izzy's cock like a vice as shockwaves of rapture ripped through her.

The feeling of Mimi pulsing and clenching around him pushed Izzy right over the edge. With a guttural roar, he plunged his throbbing length as deep into her molten channel as he could reach. "That's my nerd," she moaned loudly, "give me all of it!"

Mimi keened and arched her back in ecstasy, inner walls rippling in exquisite spasms that milked every last drop from Izzy's erupting cock. He emptied himself fully into her clenching heat, hot jets of his essence pulsing forth in powerful spurts.

Lost in the throes of passion, Izzy continued to pump his seed into Mimi's quivering sheath. Only when the last pulses subsided did he collapse fully atop her heaving form, still nestled intimately inside her clutching flesh.

Mimi clung to him weakly, basking in the afterglow. She could feel Izzy twitching and pulsing within the tight embrace of her walls, prolonging the sensations rippling through her sated body.

His essence spilled from her overflowing channel in a sensual trickle, sealing their carnal union with its sticky evidence. Mimi had never felt so thoroughly ravished and completed in all her days.

Only now, with Izzy's heavy breaths warming her neck, did she feel truly satisfied. Her darling nerd had proven himself a perfect match in every way that mattered again, and Mimi looked forward to unlocking those depths again and again.

She carded lazy fingers through his sweat-dampened hair, pressing soft kisses to his forehead. "My darling nerd, you truly are a genius when roused," Mimi purred affectionately, her voice sweet as candy.

Izzy huffed a breathless chuckle against her neck, arms tightening around her slender waist. "Only for you, my love."

I hope this was to your liking. I would like to thank all commenters; I've read your suggestions for future chapters and some of them have found their way onto my list.

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