Work Text:
Kon slide his lollipop from one side of his mouth to another, humming as he watched Robin work out. He was bench pressing with no shirt on, in just some black shorts and of course his domino mask.
Robin pushed up and his muscles flexed.
Kons mouth watered.
Robin grunted, growing more tired and sour from the working out.
Kon swirled his tongue around his lollipop.
Was it always this hot in here?
It's been a while since he had comes to terms with this attraction towards Robin and even longer since he has come to terms with his sexuality. So really, why was he questioning his reaction?
Because his cock had no business getting this hard this fast from watching someone work out…
Shirtless
Kon heard his lollipop crack under the pressure of his teeth, his mouth starting to feel empty with the absence of the candy.
Thinking was always easier with something in his mouth and without any other thoughts to distract him, his mind started to fill the emptiness with fantasies.
Fantasies of how he could take Robin in his mouth, make the boy moan. Did he moan like he was in pain or differently when he was in pleasure?
It would be so easy to pull down those damned shorts.
It would be so satisfying to taste his cum…
Konner squirmed, swallowing the last bit of his broken candy before spitting out the stick of it into the bin.
One look down was enough to see that he was leaking.
Without much thinking- how could he think with an empty mouth anyways- he went towards where Robin had just finished his last set, placing the weight back to its place.
He was sitting on the edge of the bench, legs spread around it. Oh fuck…
His muscles were shining under his sweat and the tired hufs and puffs-
"Superboy? Do you need the ben- Kon what are you doing!" Kon had dropped on his knees between Robins legs, licking his lips. " 'm fine, how about you?"
Robins eyes widened behind his mask when his shorts and boxers got pulled down swiftly, leaving him fully exposed in front of the eager looking Super.
The Super that was still dressed in a tight, black tank top that wrapped around his muscles and a pair of grey sweat pants.
"Kon-" two fingers getting pushed in his mouth stopped Robin from speaking. "Sh… I can't think with an empty mouth."
Kon watched as Robins cock twitched to life. "You like this, Robs? Like sucking on my fingers like I'll be sucking your cock?" Robin swallowed around the fingers, breathing heavily from his nose.
And then
He sucked slightly in the fingers and Kon felt like he's in heaven at the sight. Fucking-
"Yes, birdie, just like that…" he smirked, watching Robins arousal grow from sucking his fingers. Kon breathed onto the tip of Robins cock and watched it twitch in response. "So responsive, aren't ya?"
Kon pressed a kiss on the base of his cock and then licked a stripe upwards, twirling his tongue at the tip until he tasted a salty sting on his tongue.
Robin turned his head away but couldn't keep himself from looking back down with his eyes. One of his hands were covering the lower half of his face to hide his blush while the other started to play with the single strings of hair sticking out from Kons combed hair.
"Hmph!" He tried to speak, voice a bit strained. "Got something to say, birdbrain?" Robin nodded and Kon slowly pulled his fingers out from his mouth, putting them his own lips to taste Robins salvia. With a sharp breath, Robin tugged at Kons hair. "Get back…" he whimpered.
He hadn't even started properly and Robin was already gone. "Aww… is the baby bird feeling needy? Need something to stick your cock in?" Robin looked away again and with a smirk, Kon took Robins length in his mouth. Unlike the candies he liked to eat, Robin had a salty sting alongside a… Robin taste, I guess? He didn't knew how to put it but he was sure this was a taste special to his bird.
Kon took his sweet time going deeper, watching Robin squirm and whimper, he tried to push Kon deeper with his hand but Kon stopped him, yanking the hand away from his head and pushing it away. To make his lesson stick, Kon stopped moving and Robin was starting to get restless
"I-I get it! I won't touch you just- oh fuck- haa!" Kon got back to sucking his new lollipop, his own hand pushing down his sweats and boxer just enough to pull out his own dick.
"Ah- Kon! I- fuck fuck-"
His Bird was singing so well for him…
Kon started stroking himself, his hand pumping up and down in synch with his head. Robins hips started to stutter an he felt himself getting closer and closer-
"Kon!" Al he could do was chant Kons name. he felt himself getting closer and closer-
Kon stopped. "Wha-"
"Shhh… Not so soon, Rob. I still need to enjoy it a little bit more. Can you hold it in for me? Until I tell you to come?" Robin nodded like he's in a trance, bracing himself with a deep breath and Kon dove right back in.
Loud slurps and Robins moans filled the room as Kon enjoyed his treat. One of his hands kept up pace on his cock while the other found Robins balls to knead them, enjoying the fullness in his hand.
Robin started counting his gadgets in his head to stop himself coming if not from the attention on his cock, from the mere sight of Kon-El on his knees and enjoying a cock.
"Haaa! Kon- ahh… I-I- m'gonna cum!" Robin warned. Kon nodded, giving him permission to do so. A particularly well felt knead on his balls and a sharp suck at the tip of his cock and Robin was coming with a loud, long groan.
Kon drank it all up, his own hands covered in his own cum. "Haa!" He took a deep breath, looking up at his panting Robin. "Kon I-"
"Not now, Rob" Kon leaned his head on Robins thighs, lazily running his tongue at the edge of the boys balls. "Ohhh- Kon- 'm still sensitive…" he complained, leaning back on the bench with the support of his hands. "Exactly… even sweeter" Kon hummed and pressed a kiss on the base of Robins balls.
"I-I can't go again yet…"
"That won't be an issue"
Kon stood up and pulled Robin from his hands, turning the bird around. "Because I can" Robin yelped as he got pressed down to stick his ass out, Kons cock rutting between his thighs. He was already hard again. "Nice part of being a kryptonian, yeah? Better if you're getting fucked by one."
And then, Kon lined himself up with Robins hole and-
Holy shit he was big.
Robin cried out, feeling how his cock was trying to garden again despite not being ready. It was painful. The stretch from Kons cock in his ass was painful. He loved the pain. The more he loved the pain the more his cock tried to harden and hurt in the process and the more hurt the more- you get the idea.
Robin sobbed, whimpering "hurts… Kon…"
"I know baby bird… but don't you think I deserve it? I did give you a good blow job, didn't I? Now I want a tight little hole to empty my balls into" Kon pushed the last bit in, feeling Robin squeeze him.
"Again" he pulled out.
"And again" he pushed in painfully fast, a sharp slap on skin echoing in the gym.
"And again" he pulled out again.
"And you?" Back inside. Robin hiccuped between his tears.
"You'll be that hole." Kon grunted at how hard Robin was squeezing him, picking up pace the way he wanted.
Robin realised only now that even when Kon was on his knees, it wasn't about his pleasure. It was always about Kons pleasure. No matter in what way, and now his whole body felt it.
Finally, finally, his cock hardened without much pain and he almost felt disappointed at the loss of the sharp sting. That emptiness disappeared the moment Kon pulled his head back by his hair, his neck feeling the strain.
The pain was delicious. He wanted more.
"Ahh- oh- fuck- yes… Kon! Mhmph-" his voice got cut of by the tongue shoved into his throat. The kiss was messy, teeth on teeth, tongues missing their target and Robin shuddering made it hard for it not to be messy.
Kon tasted like the sweet candy he was eating a while ago and a bit of salty from the cum he swallowed. The taste made Robin feel dizzy in the head and he started moving his hips to match Kons speed and rut his cock onto the bench he was pressed against in the midst of it.
"Hngh- haa… Ko-mhmph" Robin couldn't keep up. It was all so much- the big, thick cock stretching his insides, the tongue and lips in his mouth and the way the cold metal of the bench felt against his warm cock-
Robin watched in surprise as his cum spurted and covered the bench. Oh…
Oh no…
Kon slowed down and eventually stopped in two or three thrusts.
"Didn't I tell you not to cum 'less i tell you to?"
Robins eyes widened, the white of his domino enlarging. "I'm sorry! 'M really sorry! Didn't meant to- I- I really didn't mean to… y-you were just so good and big and filling me up and stretching me so so soooo good I-I just couldn't- AHH!"
Kon slammed inside, pulled out and slammed inside again.
If Robin thought he was getting fucked hard earlier, this was on a whole other world. Kon was pulling out and pushing in in inhuman speed-
Oh…
Super speed…
Robin felt his cock ache, sensitive and leaking and covered in cum as he got rocked against a bench.
" 's okay birdie, you can't help it…" Kon reassured, his voice swilled by the sound of skin on skin. Robin sobbed and felt his arms almost giving up.
Well they did give out but Kon was holding him now. One arm wrapped around his waist while he pulled Robin towards himself in synch with his inhuman thrusts. "So good for me baby bird… what a good Robin… taking me in so well… not even complaining…"
Whimpering, Robin clawed at the thick bicep around his waist. "You're h-hurting me…" Robin moaned, his voice strained and words slurred. "Yeah? You want me to stop?" Kon teased, he had noticed the way Robin reacted to pain.
With pleasure.
"N-no! Don't stop! Please don't stop I- ahh" He hadn't even realised he was hard, let alone coming. Robins tears were dripping on the floor and Kons thrusts started to get sloppy. Less coordinated and more… messy.
He was close.
"Oh birdie… Robin… my birdie… fuck so tight so good… you- fuuuuucck… you feel so so nice Rob…"
Kon was babbling at this point.
Robin felt something warm flooding his insides. Kon was probably Cumming.
Only after he was sure that Robin is stuffed full of cum, Kon pulled out, still holding Robin.
"Kon?"
"Yes, Rob?"
"This was nice…" Robin was blushing so cutely.
"Yeah? You wanna do it again later?"
Robin nodded, "mhmm… I wanna be inside you next time"
"Is that so? Why not, if you ask nicely"
Robin chuckled, "you want me to beg?"
Kon smiled and started tickling the boy by his sides. "Maybe"
Robin cracked laughing, kicking his legs in the air. Kon manoeuvred him so he had his legs around Kons waist.
"Let's take a shower, we can see for the rest later" Kon turned towards the gyms showers. "what l do you want to eat later?"
Robin hummed thoughtfully, burying his face in Kons neck. "Aside from you?"
Kon nodded with a soft smile, kicking the door shut behind his back.
"How about Italian?"
"Whatever you want, birdie"