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Genos woke him up early that morning.
The sounds of pots and pans and utensils were annoying to Saitama’s sharp ears. When he stalked out of bed and grumbled such thoughts as he took his seat at the table, Genos had nearly fallen to his knees and begged Saitama for forgiveness. The cyborg was an emotional one; odd considering he was almost completely mechanical. It was as though circuits and wiring transmitted too much data to him all at once, resulting in his frequent bouts of emotional outbursts. While fury was the most common, it was sadness that Saitama never liked seeing on any occasion. He was never good at comforting; he was too awkward verbally when it came down to it.
So Saitama had kissed him.
Were he human, Genos would have burned his hands on the stove when he staggered back slightly and clutched it. Saitama merely stared at him with his signature slight smile and thanked him for making breakfast and to call him when it was ready. Less than half an hour later they were sitting on the couch, breakfast set on tray stands and watching the morning news. Saitama’s districts were reported as untouched for the first time in months and he could see Genos smile out of the corner of his eye.
“Those who trespass are fools, Sensei…” Genos murmured beside him, setting aside his tray and taking both of their empty dishes. Saitama chuckled and nodded in agreement, reaching out and taking Genos’ wrist to pull him down to eye level. “And you are the sweetest of them all, my little Genos.” The cyborg’s eyes widened, red irises bright and embarrassed. A shy smile settled itself upon his lips and he continued to the kitchen. Saitama admired the flush of Genos’ face before he left and the gust of warmth that spilled from his disciple’s body at his words.
It was true. Genos was technically trespassing as he wandered the abandoned streets of Saitama’s home district of City Z. On his way home from grocery shopping, Saitama was greeted with an armful of beaten and broken Genos and an eyeful of a disgusting monster that was blown away with a single punch as usual. He lifted Genos and his discarded groceries and continued home where he proceeded to cook a meal for a very thankful, hungry cyborg. Genos had promised to serve him loyally and has done so ever since then. He was willing to do anything for his Sensei.
Saitama felt he hasn’t expressed his appreciation enough.
Looking to the kitchen, Saitama could see Genos finishing up the dish washing and soon his apron was slipped off his slim figure and hung on a hook as he came back into the living room. When he sat back down, Saitama eyed him over before wrapping an arm around unsuspecting shoulders and pulling Genos to his side. There was no struggle, only a sense of wonder in eyes so wide and shy. “Sensei?” Saitama hummed and shifted to lean back against the arm rest, fitting Genos between his legs and tugging him forward against his chest. “Hush, will you…” he merely whispered, taking the remote and shutting off the TV.
Genos did as told; sighing in what Saitama knew was contentment and relaxing without hesitance to his Sensei’s body. Such trust, Saitama thought. Their guards were let down completely when around each other and Saitama admired such a quality. Genos was not scared of him like everyone else was. He was not scared of his power, he craved it in fact. No, Genos was only scared of letting Saitama down, of disappointing him, of being unsatisfactory; things Saitama had no need nor care for. A soft hum pulled Saitama from his thoughts and it was only then did he realize his fingers tracing the curve of Genos’ metal spine.
The cyborg nuzzled closer to him, burying his face in Saitama’s chest and clutching his hoodie tightly in his hands. The man continued his ministrations, memorizing each slight bump of the cord at his fingers as well as the quiet sounds that accompanied such touches. Genos purred at times and now was one of them. His chest would vibrate slightly and Saitama realized that it was his very core which elicited such vibrations. He noticed that the red biolights beneath dark armor would glow brighter at his touch and the cyborg’s warmth was utterly soothing to the world’s most powerful man.
“Genos.”
“Y-Yes, Saitama Sensei…?” Genos raised his head and rested his chin to Saitama’s clavicle, his eyes looking slightly tired and dazed. Saitama pursed his lips as he watched his expressions, bringing his hand up and petting Genos’ hair tenderly. “You know I appreciate you, don’t you?” The question was easier to let out than Saitama expected, but it was the silence that answered him which made him anxious. A few more moments passed before another shy smile spread across Genos’ lips. “To hear you say so means everything, Sensei. I-I certainly hope you know that I appreciate you as well…” he whispered, averting his gaze.
Saitama smiled slightly and stroked the backs of his fingers over Genos’ cheek. “I know,” he murmured, “I wish to show you my appreciation, Genos, though I am unsure as to how I may…” It was rare when Saitama was uncertain about a course of action, but Genos was a special one in more ways than one. The cyborg looked extremely flustered. His face was shining red and the temperature of his body was rising fast. Very fast. Oh… “Ah, Sensei, you don’t have to do that, I-” Saitama curled his fingers into Genos’ hair and tugged him forward, kissing him for the second time that morning and parting those lips with a curious tongue, eliciting the most beautiful sound ever to reach Saitama’s ears.
With a low growl, the man pulled away from pleading lips, looking into dazed, crimson eyes with his own smoldering brown. “Genos,” he started firmly, taking one of Genos’ hands. “You will stop me if I ever begin hurt you, is that understood?” The cyborg nodded frantically, his hand trembling in Saitama’s hold. Saitama assessed the expressions crossing Genos’ for a moment before continuing, releasing the cyborg’s hand and bringing his own up to trace his jaw line. He exhaled steadily, calming himself and stroking his thumb over Genos’ scorching cheek, merely examining the perfect contours of his face before looking into those eyes once more.
“You are very beautiful, Genos.”
The words were sincere. Saitama could feel the rise in Genos’ core temperature as he moved his fingers down and traced the black mesh and white cables across his neck. “When you come back to me after every repair, you seem more beautiful than the last,” he murmured, pulling Genos closer and running his index across a metal clavicle. “It’s a shame you don’t scar.” The man chuckled softly before returning his gaze to Genos’ awed expression. “Well… neither do I...” Genos’ hands were tentatively resting on his arms, those red irises searching his face. Saitama smiled at the thought of his disciple recording this.
“Sensei…”
Timid fingers moved up to cup his jaw and Saitama found himself leaning into the touch. He raised his own hand and cupped one of Genos’, turning his head and pressing a kiss to his palm. “Your presence has been extremely soothing,” Saitama whispered against the warm metal, closing his eyes. “You made life easier.” The hitch in Genos’ breath hardly went unnoticed and Saitama smiled, opening his eyes and leaning back against the couch again, pulling Genos above him. He rested his hands to the cyborg’s hips and tugged him closer, humming approvingly when Genos leaned down and sealed their lips together himself.
Saitama groaned roughly as Genos’ hands kneaded firmly at his shoulders. He broke the kiss and growled quietly against his ear. “Nothing will take you from me…” Above him Genos smiled and pushed their lips together once more, moaning contently and wrapping his arms around Saitama’s neck. “Yes, S-Sensei,” he panted between kisses, arching as strong hands stroked up his sides, one shifting up to trail callous fingers over the clothed ridges of his spine. Soon his jacket was unzipped and slowly pulled from his torso, falling off to the side of the couch.
Genos bit his bottom lip, watching Saitama’s fingers slowly stroke the plating of his abdomen, tracing every line and ridge. The cyborg shuddered and clutched his Master’s hoodie when those warm fingers ghosted over the zipper of his jeans. Saitama chuckled softly as he pulled Genos closer, hands settled on his hips and thumbs pressing firm circles into his crotch. “The good doctor doesn’t seem that much of a pervert to me,” he mumbled lightheartedly, looking up to observe Genos’ reactions. He seemed to be enjoying his touches and his wobbly smile and light laugh was something to remember.
“N-No, Sensei… Though, he wished for me to be as human as possible,” his words were tentative and shy in their suggestion. Thankfully Sensei wasn’t as dense as people thought him out to be. “And you wished the same…” The way Saitama’s voice would deepen sent another wave of heat spreading from his core and there was no doubt the man could feel it. When those deep brown eyes looked up to him, Genos knew his assumption was correct. The cyborg gasped silently when the button of his jeans was popped, but he didn’t turn away from those eyes. They relayed something, as if they asked for consent.
Genos hummed quietly, arching his hips into the contact to answer his Sensei’s silent question. His zipper was slowly undone and Saitama pulled Genos to his chest, watching the arcing of his back over his shoulder for a moment before tugging at the material, slipping them over his ass and thighs before Genos kicked them off to the floor himself. Saitama smiled and nuzzled his face to Genos’ neck, noting the quiet whimper against his own shoulder when he ran his lips tenderly over a white cable.
“Sensei…”
If Genos knew that Saitama absolutely relished in the way he’d call his title, he’d probably short circuit. The thought made Saitama chuckle quietly and he pressed a kiss to that sensitive cable before gently pushing at Genos’ chest. The cyborg was reluctant to pull away. Sensei’s chest was so warm even through his hoodie… “S-Saitama Sensei,” he stammered, wringing his hands at the hem of said hoodie. “May I, please…” A warm smile passed Saitama’s lips and he nodded, raising his arms as Genos slipped the material off, amused at the fact that the cyborg made to fold it before setting it to the floor.
“You are oddly adorable, my little Genos,” the man chuckled, pulling Genos to himself again and watching the steam that rose from his plating. He nudged the cyborg’s cheek gently with his nose and pulled him into another kiss. Genos moaned quietly, closing his eyes and kneading his fingers into Saitama’s shoulders once again. Sensei’s kisses were fire and Genos had absolutely no objection to burning within that heat. Slowly and shyly he began moving his hips, a simple rocking motion that sent sparks of pleasure up his spine when he felt Saitama arch into his movements.
He found those dark eyes watching him when he opened his own, a sultry expression on that face when he pulled away. “Sensei…” he whined quietly, resting their foreheads together. Saitama growled quietly. “Open for me, let me see you.” It was an order that Genos obeyed eagerly, chastity piece sliding aside to reveal himself. The low groan above him sent a hard blush to his face and he whimpered pitifully when Saitama’s thumb lightly grazed the slit at the head of his cock. Genos gripped Saitama’s shoulders, arching into the touch and watching those fingers slowly curl around him, delivering a slow pump.
“Metal?” Saitama breathed, astounded at how realistic the cyborg felt in his hands. “Ahn… A-An extremely pliable metal, S-Sensei… Metal mesh and r-rubber, aah…” Saitama traced the glowing red biolights that ran along the length in tantalizing patterns. “That professor is quite the miracle worker, Genos,” he mumbled, watching a bead of pre-cum drip daintily from the tip. Genos hummed shakily above him, spreading his legs a little more and wriggling his hips to rub himself against Sensei’s abdomen. “Hmm?” Saitama tilted his head and raised a brow when he felt a wet warmth on his stomach.
He pulled Genos to himself once more, bringing his legs up to let the cyborg lean back against them. His disciple seemed keen on keeping his thighs closed, his hands covering his face and that blush glowing radiantly all the way up to his ears. “Genos,” he called quietly, but the cyborg seemed too embarrassed to answer. Saitama chuckled and rubbed his hands tenderly over those quivering thighs, making sure to trace his fingers over sensitive seams before moving back up to stroke his cock. Genos mewled softly above him, his hands moving away from his face to grip the couch for support. “Aah, Sensei…”
“Don’t close them, let me see, koi.”
Genos’ eyes widened and his resolve absolutely disintegrated at that simple word. Hesitantly, he parted his thighs, leaning back against Sensei’s legs and melting when that touch came. His thighs jerked closed involuntarily, but Saitama’s gentle touch coaxed them to relax once more. It amazed him that hands so destructive could be so tender… Genos panted quietly, resting his head back and pushing his hand in his hair as kind fingers explored the sensitive, wet folds between his legs. His breath quickened when one pushed in and he arched up with a soft cry.
He’s never touched himself.
His mind was too set, his field of vision nothing but red for four years before meeting the man before him. The sensations were breathtaking and he found himself pressing into them, his other hand moving between his legs to clasp Saitama’s wrist to pull him in. “Feels good?” Sensei asked of him, rewarding his student by pressing another digit into him. “S-Sensei, it feels so good, please…” Genos’ eyes fluttered closed, his back arching off of Saitama’s thighs and spreading his own when those fingers grazed a certain spot that sent an intense jolt of pleasure through his whole body.
“Saitama Sensei~!” he cried loudly, bucking his hips weakly, drenched walls clenching when a third blissful digit spread him and the tips continued rubbing that delightful little spot. Saitama near purred, finding Genos’ sounds utterly tantalizing and the way he writhed and arched wasn’t helping with the throbbing ache in his pants. A sharp gasp caught his attention. Genos’ whole form trembled, clenching and spasming tightly around his fingers, crimson biolights brightening considerably before he came with a shout of Saitama’s name.
The cyborg panted weakly above him, slumped against Saitama’s chest and face buried in his neck, warm fluids drenching both their abdomens. Saitama blinked a few times, complex feelings of pride, lust and something else raging in his mind as he listened to the soft sounds Genos made against his ear. That was… That was pure, unreserved beauty is what that was. His heart pound wildly in his chest; echoes of the way his name fell from those lips etched permanently into his memory.
“Sensei…”
Saitama shook away those thoughts and brought his hands up to cup the sides of Genos’ face, bringing him back to look at his face. He looked utterly content; his face flushed and lips quivering with an adoring smile. Absolutely ravishing… Saitama pulled Genos close into a warm kiss, stroking his thumbs over his cheeks and nuzzling their noses together affectionately when he pulled back. He closed his eyes for a moment, taking a moment to catch the breath he hadn’t realized he’s been holding. The man chuckled quietly, looking into those admiring red irises. “Was that appreciative enough?”
He wasn’t expecting the shy averting of eyes and shake of the head.
Saitama groaned roughly, throwing his head back against the armrest of the couch when a sly hand stroked lightly over the thick bulge of his pants. Genos mouthed hotly at his bared neck, nuzzling him and placing warm kisses and licks to scorching skin. “Sensei, my appreciation has yet to be shown,” he whispered, voice dripping of desire. Saitama shuddered and leaned up, kissing Genos firmly and growling against his lips. Genos whimpered and whined when large hands clasped his ass tightly, the tips of his fingers tracing his still overly sensitive entrance.
“Show me then, koi…”
Genos hummed shakily and nodded, stealing a chaste kiss from Sensei’s lips before shifting away from him. Saitama sat up, his focus set on Genos and his timid movements. Such innocence… The cyborg stood up on wobbly legs and Saitama chuckled softly, taking his hand when he looked like he was tipping backwards. Genos blushed brightly when the back of his palm was kissed, averting his eyes and biting his lower lip to hide a bashful smile. He knelt before his Sensei, bringing shaky hands up to pull lightly at the band of his sweatpants and underwear, blushing furiously when Saitama tilted his hips up for him as his slid them down.
His breath caught in his throat and he whimpered as he took Sensei’s heavy cock into his hands, moaning quietly in response to the low growl above him. “Oh, Saitama Sensei…” he breathed shakily, looking up into those deep brown eyes, whispering the most delectable, precious thing ever to reach Saitama’s ears. “Y-You’re still so hard, Sensei… I-I’m so sorry, I took everything myself…” Saitama shuddered and brought a hand up to stroke Genos’ hair, completely smitten with this little cyborg. “Make it up to me then, sweet one,” he purred, leaning down and pressing a kiss to Genos’ lips.
That seemed to spur the cyborg on. Saitama grunted, sinking back into the couch when Genos took the head of his cock into his mouth. He was warm and soft and wet; utterly realistic and absolutely perfect. Genos mewled softly, closing his eyes and pressing down further, sucking delightedly and tracing his tongue over every ridge and vein. Sensei’s scent was intoxicating. He felt dazed as he bobbed his head slowly, pulling back only to swirl his tongue over the sensitive slit before dropping back down. Saitama moaned above him, pushing his hips up when Genos would pull back.
Sensei’s sounds were so pleasing. He groaned when his tip hit the back of his throat and swallowed around him, relishing in the low snarl that reached his ears. He was suddenly pulled away and he moaned at the loss, synthetic saliva dripping down his chin. Saitama’s lips were on his at once. Genos moaned loudly when he was pulled into his Master’s lap and he gasped when his length ground firmly between his legs. He went absolutely weak at the sensation, wrapping his arms around Saitama’s neck for support and nuzzling him adoringly. Small bites were pressed into his neck and a pulse of heat shot up Genos’ spine when Sensei's cock was pressed into him.
“Aaah, Saitama Sensei-” he gasped sharply, burying his face in his neck and quivering in his hold. “Relax, koi, just relax for me…” Those words were warm and steady, whispered as he was guided back gently against the couch cushions. Genos did as told, panting quietly and wrapping his legs around Saitama’s waist, breathing in his soothing scent.
He felt so full. Sensei was so warm and he spread him so perfectly. His cock was throbbing and hard and Genos could feel every little pulse. Countless sensors were awakened for the first time by the only man he’d want to do so. Saitama’s thrusts were firm and precise; striking bundles of sensitive nodes, pulling mewls and whimpers from Genos’ very core. The cyborg clung to his Master, pressing kisses to his skin and indulging himself in that utterly masculine scent, his sweaty skin, and the sounds he made.
“Genos, look at me.”
Genos loosened his tight hold on his Sensei, looking up shyly into those dark eyes. That expression was nothing short of handsome. Saitama’s brows were knit slightly, eyes half lidded, lips parted and panting quietly for breath. Genos couldn’t help leaning forward for a kiss, whimpering helplessly as he felt oily tears trickle from the corners of his eyes. “Hey, don’t do that…” Saitama chuckled softly, bringing his hand up and wiping the cyborg’s tears away with his thumbs. Genos sniffled and nuzzled into those warm palms.
“Sensei, you’re so amazing…” he whimpered. “The things those people and forum blogs say about you mean absolutely nothing if no one has even taken the chance to meet you. Y-You’re so caring and gentle. You protect those people and they cast you off as nothing but a villain.” Genos’ eyes were shining once more, feeling so small and weak before a man who was his entire world. “I promise I’ll follow you loyally, Sensei, I won’t-” He was silenced by warm lips and he leaned into them submissively, taking the sides of Saitama’s face to pull him closer. He panted softly when they parted.
The smile on Sensei’s face was so handsome…
“20 words or less, koi…” he chuckled, pressing a kiss to Genos’ nose. Genos smiled shyly and wriggled his hips teasingly, arching into the firm buck which followed. “Mmmh, you are everything to me, Saitama Sensei…” he whispered against his ear. Saitama moaned softly and wrapped his arms firmly around his cyborg, thrusting himself deeply. Genos cried out and rolled his hips sensually onto Saitama’s cock. He was so full. He’s never felt so complete and cared for, the sensations were irresistible. His vision was whiting out slightly and he gasped when Sensei brushed a rich, sweet spot deep inside him.
“Right there, aahn, oh please, Sensei-”
Saitama gave him what he wanted, growling roughly against Genos’ ear and thrusting firmly into that little spot, relishing in those cries. His cock throbbed desperately in that tight warmth. Those walls rippled and clenched around him so beautifully. “I-I’m gonna- Oh, Saitama Sensei I-I can’t…” Genos whimpered, bumping their foreheads together and looking into his eyes, looking so innocent and helpless. “Come on, koi… Oh fuck, let go for me, come on, Genos…” Genos screamed, writhing below his Sensei, releasing every ounce of his cum onto his stomach and chest.
Saitama moaned roughly as he watched him, coming hard and pushing himself deep, his arms near quaking for the first time in such a long time as he held himself over his little koi. Genos’ eyes were closed, head tossed back and body completely relaxed under him as he panted for a breath. Saitama reached down, stroking Genos’ cheek and pressing a kiss to his parted lips, smiling affectionately when those red eyes opened for a moment before closing once more. The poor thing was completely out of it and he couldn’t blame him.
The man groaned as he pulled out of him carefully, finding his footing before lifting Genos into his arms and to the bathroom. He cleaned him up, a warm, damp towel stroking away the drying fluids on his disciple’s chest, abdomen and gently between his legs. Genos leaned on him the whole time, occasionally nuzzling his face into Saitama’s neck and whispering things that the man could barely make out. Saitama smiled softly and kissed his lips tenderly to keep him quiet, lifting him up once more and setting him down carefully on his futon when he entered their shared quarters.
Without a second thought, Saitama pushed his own futon against Genos’, lying down beside him with a soft huff and pulling him against himself. Genos snuggled right up to him with what little strength he had. The red lights on his armor were dim from lack of energy, but Saitama still saw that determined little brightness in those pretty eyes. Saitama stroked his hair lightly, watching the cyborg’s face and how he tried keeping himself awake. Such a display sent a surge of affection through the world’s strongest man’s heart. Genos was his only weakness, yet he made him feel so much stronger, so much safer than before. With a quiet hum, Saitama nuzzled his face to Genos’ hair, closing his eyes and whispering quietly to him.
“I’ll protect you from the world, koi, I promise…”
Genos smiled softly.
Recording saved.
Recorder disengaged.