“Ah! Superboy! Right on time!” Professor Ivo said as the Teen of Steel appeared floating outside his penthouse window. Ivo touched a control and the window opened long enough for the caped youth to drift inside and touch down.
Ivo smiled as he shook Superboy’s hand. A thrill shot through him at the lad’s strong grip, the innocent smile, the sleek and perfect young form that would soon be his.
“Always glad to help the advancement of science, Professor! What did you need me for, exactly?” Superboy said.
Ivo smiled and put his hand on the back of Superboy’s neck, letting his fingers slip across the shaven sides and then up into the thick unruly mass atop his head, combing it with his fingers until the young man’s bangs hung low across his eyes again. His fingers drifted thought Superboy’s silky black hair with a slow stroke that ended back on his neck. Superboy endured the intimate strokes with polite confusion. Good. The boy was eager to please and suspected nothing.
“You know that I’ve been working on an analysis of your superhuman physique for the government, right?” Ivo said casually as they walked down the hall and took an elevator down a level to his private lab. Superboy’s long cape billowed against his leg as they walked and Ivo had to control himself with an effort.
“Yessir; those experiments we did a couple of weeks ago; did they yield anything useful?” the young man said. Ivo looked at him. Nineteen years old was his best estimate. Those sparkling clear blue eyes, so piercing. That smile.
Ivo shook his head. “Alas, no, Superboy. My instruments simply are not reliable against your invulnerability. The readings were, ultimately, useless.”
“Oh, I’m sorry to hear that. Is there something I can do?”
Ivo shook his head. “Nothing, I’m afraid, except expose yourself to kyrptonite to lessen your invulnerability, and I cannot ask you to do that. No, no, I know you can endure the pain, but it’s cumulative effects, poisoning your body... I cannot ask you to do that,” he said quickly over the teen hero’s noble protestations, eager to sacrifice himself for the sake of science.
God, this naive boy made him sick. Ove the years, he’d sacrificed acres of people on the altar of science to further his goals. Kidnapping, slavery, and murder; he’d done it all and this little twat just offered himself up? He smiled and put a hand on Superboy’s broad shoulder as they walked. It was like touching granite wrapped in silk.
“I cannot ask it of you, but... green kryptonite is not the only kind, now is it?” Ivo said as the lab doors opened before them.
“Um, true, but the other kinds don’t affect me, except for red and gold. And, um, you’re not planning to use either of those, are you?” Superboy said.
Ivo almost laughed. At last, a hint of concern from the young god next to him. That slight crease between the eyebrows, a sliver of fear in those beautiful eyes... it was like milk and honey to him.
“Actually, I’m planning on using both of them,” Ivo said casually as he pulled a thick capsule from his coat pocket, and this time he did laugh as the Teen of Steel flinched back. Of the various forms of kryptonite, Red was dangerous, unpredictable, but Gold... Gold could destroy his superpowers forever and make him a normal boy.
“What?!” Superboy said as Ivo held up his hands.
“Relax, Superboy, relax. Neither of them are present here in their pure form; they are in a remotely-operated lab in Utah. What I have here is the synthesis of those two elements....” Ivo said as he opened the capsule.
A soft pink glow pulsed from it, a bullet-shaped chunk of stone roughly the size of his thumb but about twice as long and thick, with a slightly flared base. Superboy stepped back, then paused when he realized he felt no pain, nor any of their weird effects Red had on him. He reached out carefully until his bare fingers stroked the polished surface.
“What is it?” he said. Ivo watched the boy carefully. Yes. No fear. Attraction. Relaxation. His heart-rate increasing. He looked down. Yes. YES.
Superboy’s cherry-red trunks had a substantial bulge to them, now.
He reached and stroked the back of Superboy’s neck, letting his fingers tease the shaven stubble, then up again into his hair, playing with the youth’s soft curls. Superboy closed his eyes and moved his head in a languid motion as Ivo then moved his hand down to intimately and slowly caress the young hero’s mouth.
Superboy parted his lips, his tongue gently licked Ivo’s fingers.
Ivo clcked the casing shut again and removed his hand. Superboy blinked, then looked confused. Good. Fugue state. Experiment continues.
“What...?”
“Nothing, just your body getting used to its effects, just as I predicted. This new substance will lower your resistances and your strength but you retain your mind and form. And your powers, of course. Just at a lower level. So the instruments can finally register, you see?” Ivo said smoothly.
“Oh, yeah, yeah,” the youth smiled and nodded. “So what do we do first?”
“First, the capsule needs to be implanted, so...”
“Um, how?” Superboy smiled. “My skin is still almost impenetrable.”
“Oh, there are ways,” Ivo said as they approach the table. Superboy undid his cape, folded it, and put it over the back of a nearby chair.
Ivo smiled. Superboy still did not notice his erection. It tented his small trunks now, so tight he could tell the Teen of Steel still retained his foreskin. Of course he did. Who could have ever removed it?
“Disrobe, and lay down on the table, face-down ,” Ivo said matter-of-factly as he prepped other instruments on the tray next to the exam table.
“Oh, okay,” Superboy said. His skin-tight costume came off at super-speed. Ivo blinked at the boy’s colors were neatly folded on the chair. He swallowed as he watched the statuesque teen get on the table. The costume highlighted Superboy’s athletic physique but seeing him naked was a rare treat.
Smooth and sleek, his muscles were thick mounds of power without being muscle-bound. And that cock. Fully erect, it was a good eight inches in length, the hood tight over that large plump crown. Ivo had to take a second to watch the spectacle as Superboy mounted the table and lay down on it. His head rested in a cradle, and his large cock slid through the hole in the table to point at the floor. Ivo had to restrain himself from caressing those firm, full buttocks so exposed.
Ivo undid the capsule once again and held it in his left hand. Then he walked the length of the exam table and ran the slick polished stone over Superboy’s powerful body.
“You may feel a tingle, Superboy,” Ivo said as the teen nodded. He slid it over those perfect mounds, up his back, and over those broad shoulders. Superboy moved a bit, gasped softly, then whimpered a bit as the stone came to rest at the base of his skull.
“Yes. Absorb its radiations, Superboy, let it relax you. Calm you. You feel yourself drifting. Slowly, slowly, like you are flying. Yes,” Ivo crooned as he stroked Superboy’s body with the pulsing pink kryptonite.
“Are,.. Are the tests going well, sir?” Superboy said, dreamily.
“They are going well. You are perfect. You are calm,” Ivo said.
He moved the kryptonite bullet down, down, until he nudged Superboy’s legs apart and the youth complied. Of course he complied.
Ivo teased his fingers over the Teen of Steel’s pucker, slow smooth strokes of the lad’s tight ring, until Superboy whimpered softly in his desire. He dipped his fingers in lube and went back to the tiny, wrinkled star, teasing, stroking.... and now pushing, until first one finger and then another penetrated Superboy’a ass.
“Wha--- aahhh! P-professor, wha--- Ahh!” Superboy moaned.
“Ahh indeed, Teen of Steel,” Ivo chuckled as he worked the boy’s anus, stroking it, slowly fingerfucking the youth until he was ready. Then he took the kryptonite bullet in hand and slowly pressed the thick object into Superboy’s anus.
“Ahh! Ow! P-professor?” Superboy gasped as the plug slid into him, popped through, and then seated and sealed against his ring. The pink glow intensified as Superboy’s body heat activated it fully.
“oooh! OOOHH!” Superboy whined as he felt the pulsing heat in his ass, so warm and comforting, pulsing, throbbing...
SPLATTT! SPPPAAATT! came from under the table.
Superboy had ejaculated, his eight-inch super-cock pulsing as it spit stream after honey-thick stream of cum! As he spent himself, the streams went into a tube that had risen from its hiding place to catch the super-cum.
“UUHHH! UUUUUHHH!!” Superboy cried out as he orgasmed. The solid-steel exam table bent as he gripped it, his powerful still-superhuman muscles surging as he groaned and bucked in his pleasure.
“HAHAHAHA! Yes! YES!” Uvo laughed, as he watched the boy’s cock spurt and spurt its long ropes of super-cream into the collection tube below. The tube moved up and then sealed over the young super-cock with a pneumatic shloop! Then it began to massage the boy’s cock, making Superboy cry out again!
“AHHH! UUUGHHH!! AHHHHH!” Superboy cried out as he thrust his dick into the tube, eager for his continuing release!
Ivo watched breathlessly as the boy spent a half-pint of cum over the next few seconds, until the youth lay on the table, wrung out from his intense orgasm.
The radioactive synthetic kryptonite plug pulsed brightly in his anus.
Ivo carefully removed the plug and Superboy sighed. He rolled over and lay on the exam table, legs spread, gasping and helpless. His slightly curved, cum-drenched, steel-hard cock quivered in the air, ready and needy.
Ivo gripped Superboy’s cock and stroked it, watching fascinated as the alien youth’s foreskin slipped and slid over the wet gleaming crown. He paused, then he bent to put his lips on the boy’s cock, sucking and licking the sweet-salty cum from its rim and under the foreskin.
Superboy gasped and twisted on the table, utterly unaware.
Ivo raised up again and wiped his mouth. “Magnificent!” he declared. Then he reached under and removed the plug. He examined it, then, perversely, he offered it to Superboy, caressing his mouth with it.
Superboy moaned and responded; his lips parted, then he licked the large plug, shivering in pleasure at the taste of his musky manliness on the plug. He didn’t defecate, so the hole was a source of pure sweat and musk combined with the sweet lube Ivo had used. Ivo laughed as Superboy eagerly suckled on the dripping-wet plug, letting its juices run down his chin, moaning with pure animal desire and pleasure, his cock leaking cum again at the intense sensations the teenager felt.
Ivo withdrew the plug and put it back in its lead capsule. Then he wiped off Superboy’s mouth and cock. At once, readings changed and firmed as Superboy’s full powers returned to him. He breathed easier, and finally those pretty cornflower-blue eyes fluttered open.
“Are the tests done, sir?” Superboy asked innocently.
Ivo nodded. The milking tube was fully retracted and machines were already processing the invaluable super-cum he’s harvested from the boy. He handed Superboy his costume and the boy was suddenly dressed in his magnificent uniform before he could blink.
“You’ve helped do the world a great service again, Superboy!” Ivo said.
One final test.
He drew the rugged teen boy against him and kissed Superboy on the lips, letting his kiss slowly morph into something passionate and intimate.
Superboy resisted for a fraction of a second, then submitted to him; he stood still and let the man kiss him deeply, slowly.
Ivo released Superboy, who stepped back and wiped his lips. “I... I....”
“It’s okay, forget about it,” Ivo said and inwardly smiled again as the boy’s eyes widened and then Superboy nodded, having forgotten the last minute or so, Yes. Completely suggestible.
“Thanks, professor! Next week, same time?” the Teen of Steel said brightly.
“Yes, Superboy, of course,” Ivo said with a sly smile.