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Ivan was always putting things in his mouth. It felt like a pacifier, an unconscious habit that just became normal. As a kid, he always sucked his thumb, it was comforting. Until he was adopted and the behavior was corrected, his guardian was informed sucking on one’s thumb could affect the pet’s development and he already had a strange fang. He would open his mouth to show his snaggletooth though it was more like a creature baring its teeth.
But regardless he still liked to suck and chew on things. He didn’t even do it to taste what he was chewing, he just liked the sensation. He liked chomping on the fake flowers in the garden, liked chewing on the pencils he stole from Till, he even learned where to steal ingredients to make his famous "Anakt Ice Popsicles" he would lick away at.
This habit never really went away, even when he grew. After the alien’s "corrective lessons" his mouth would be bruised and sore. It hurt, but he couldn’t help chewing his lips and inside his mouth. It wasn’t ideal but he genuinely couldn’t help it, he needed something, anything to keep chewing on to stop the pain, to take his mind somewhere else.
When he got older, Ivan started noticing how he wanted to have other things in his mouth. Not just his own hand, or a piece of sweet jelly. Something warm and fleshy, something that would fill him and consume him completely.
Ivan figures he’s got nothing to lose so he jokingly approaches Till with a proposition, letting him suck on Till’s body. Ivan offered to help him with any subject, or get him any tools or food behind the aliens' backs. And surprisingly Till agreed. Despite the hesitancy and his red face, Till let Ivan start by sucking on his fingers.
They were long and slightly bony but also calloused from his guitar playing. Between the length and the thick pats of calloused flesh, Ivan's mouth felt full. Till would squirm his fingers since it felt strange but Ivan loved it. He was used to playing with his own hands in his mouth, he'd suck on the tip of his pinky when he put his hand under his chin in thought. But Till’s felt different, like a pianist gently pressing against the keys that were his tongue.
Next he would suck onto his chest. They weren’t completely clueless, they knew when humans were babies they might drink milk from a provider’s chest. But since males didn’t produce milk they were left as vestigial appendages. With that knowledge however Ivan still sucked into Till’s collarbones and chest. It was honestly a bit flat and hard to feel satisfied. Till seemed very affected though, huffing and grunting while sticking his fist in his mouth.
He tried his nipples. It was better, but between the small buds and Till’s lack of plump pectorals, it didn’t fill Ivan in the way he wanted. Till seemed to like it though. Telling Ivan to "continue if he wanted but if he bit him he’d smack Ivan into next Tuesday."
Last he tried his dick. It was Till’s suggestion. "You seemed to like my fingers, so if it’s just something you want to be filled with then my dick should be fine right?"
Till was burning red at the suggestion, but he had this crazed look in his eyes, like he almost wanted to consume him back. Ivan put this thought aside and decided if this is the only chance he’d get to have with Till, then he’ll take it. He’ll deal with his selfish, disgusting feelings later.
He sits on the floor as Till is on the bed and pulls down his pants, his cock practically jumps out at Ivan. It’s much bigger than he expected. Slightly fatter at the tip with a pink reddish hue and a large vein running along the side. It dripped a bit, twitching without him even touching it. Now Ivan roughly knew what to expect, after all he’s a man too. But to see something so large (maybe even larger than himself) in front of him. It was hypnotizing.
The way it bobbed up and down when Till moved, the slippery wet head covered in a thin whitish sheen. It looked delectable and Ivan couldn’t stop himself from drooling. Till had that smirk on, the one that looked a bit out of place as if saying "ha, look at what I’m packing!" But with much more shame.
Till used his hand and moved closer to him and gently smacked his length onto Ivan’s cheek. Feeling the weight of it, heavy and warm as Till moved his hips to further rub it on his face, the tip hitting Ivan’s bushy brows. He then finally opened his mouth letting the head slide onto his tongue. It tasted slightly salty but overall not like much.
Ivan moved forward to slowly keep taking Till into his mouth, his lips wide open to take the whole girth. As it was almost fully inside, his mouth closed around it. He could only breathe through his nose and Till was staring down at him clenching his teeth.
Something clicked for him then. It felt like a puzzle piece was finally put in place. Ivan simply sat still, Tills member filling his mouth. He soaked in the feeling of being full with something alive and warm that wasn’t himself. He closed his eyes and let out a low groan.
He relaxed and just basked in the feeling of Tills cock rubbing against his tongue, the tip touching the back of his throat every time he swallowed and it constricted. His lips were stretched wide around his girth, but it didn't feel unpleasant, nothing like the forced smile practice he was made to go through.
Till was clearly having a tough time but he held himself back and sat, watching, admiring the way Ivan looked. Blissed out, cock drunk on his cock of all things. He etched every movement, every breathless groan, and the slight tears at the corners of Ivan’s eyes into his mind so he could draw this later, not that he would ever show anybody.
They sat there for a while, unmoving, just until Till softened up and pulled out. Ivan moaned at the loss but also started massaging his jaw. Sitting that long without closing your mouth hurt quite a bit, but he’d do anything to keep Till’s length inside him. He then graciously stood up and thanked Till "I’ll get you some snacks from the kitchen tomorrow, thanks for indulging me" And with that he left Tills room to go back across the hall to his own, not noticing the conflicted expression Till had on his face as he left.
The next few days were normal, Ivan sneaked the snacks he promised to Till during free time. He sat next to him under their usual tree as he sketched the flowers, his mind wandering somewhere else. As he did the tip of his pinky entered his mouth. This time Till noticed and pointed it out. "Thanks, I’m trying to break this bad habit" Ivan took his hand away from his face. Till then put his notebook down and made a suggestion "If you still want to suck on something later, we could do that thing again."
It took Ivan a bit before he realized what he was implying. He fully believed that was a one off thing and he’d never get to experience it again. But here he was, Till offering through a pink blush and mysterious leer to let him suck him off again.
Ivan agrees and later that night Till actually stayed hard and came in his mouth. The white substance, sticky against his snaggletooth. But just as Ivan thought again, this was a one time thing, a few days later he invited him over.
They went on like this for a while. Late at night they would walk across the hall to each other’s rooms and Till would fill Ivan’s mouth with his cock. Ivan dutifully stayed still for as long as he wanted, loving the slightly salty flavor and the soreness left in his jaw afterwards.
Ivan’s oral fixation seemed to bother him less nowadays. If he wanted to suck on something Till would offer his fingers. It’s was easy enough when they sat at their favorite artificial tree. Till valences his sketchbook on his lap and used his right hand while his left was given to Ivan, who was usually perched at his side.
The long digits felt great in his mouth and Till got used to the feeling. It shut Ivan up when he wanted to concentrate and if he felt like getting some revenge on Ivan he’d grab his tongue and play with his gag reflex leaving him teary eyed. But still, when night came, the two would often find themselves sneaking into each others rooms for a “candy session”.
Till loved sticking himself into Ivan’s warmth, the wet sliminess surrounding his dick always felt out of this world. Ivan looked so obedient sitting or laying on top of him, His mouth full and his nose buried in Tills pubes. Till has drawn him a few times now, his silky hair resting against their white clothes, his snaggletooth digging lightly in the base of his dick, he looked breathtaking. He would never show anyone these, let alone Ivan, but he was pretty pleased with himself.
And in just a month, Till had fully trained Ivan into a perfect cock sleeve that would gladly warm his dick anytime he wanted. And Ivan, he couldn’t be happier, gladly sucking and stuffing his mouth full. At some point he even let Till move his hips when he did this, thrusting to get some friction. Enough for him cum down Ivan's throat and leave him wonderfully sore.
Even though it made Till feel a little guilty, Ivan made sure to keep swallowing around his member, letting him know how much he wanted it. Ivan loved it, he loved Till and the way he made him feel so complete. He even kicked his habit of biting the inside of his mouth thanks to him. And, well, Till wasn’t complaining about having his balls drained on the regular. Maybe he was even excited to do more, but for now he’d make sure to "consume Ivan and make him feel whole" as many times as he wanted.