Work Text:
‘Caution: Overdose may lead to temporary transformation into a naga.’
“Huh? Nevermind.” Harry hummed absentmindedly. The little piece of warning was left unread and threw in the bin.
Harry was holding a potion flask with shimmery green liquid. It was beautiful, but definitely not very edible in Harry’s sense.
It took a while for Harry to work up the courage to put the whole content into his own cup, he emptied the whole cup of tea in one big slup.
He did not feel any difference, but of course, he was not suppose to. This potion was aimed to increase the fertility of the consumer.
Harry had been married to Tom for years, Tom never shown any interest in having kids, but Harry knew both of them wanted a family of their own, and he knew Tom would never leave his family—
Before he could start cleaning up, he had a weird feeling on his knees, and then the room spun around him.
—
There was a loud crash and painful cry. Tom dashed to the kitchen, where he found Harry on the floor, struggling to get up. Before he could get to Harry, something caught his eyes.
Emerald green, crystal like scales leaping through Harry’s torn trousers. His trousers were torn in half, leaving his legs—no, his tail trapped in the fabric.
Tail?
“Tom…” Harry was trying to lift himself off the ground with his arms, with his tail wiggling behind him.
Tom quickly kneel beside Harry to help him up, and carried Harry to the counter top to sit on the edge. Harry cringed onto Tom before he could pulled away, “Merlin, what’s wrong with me?” Harry must had seen his tail by now.
“Darling, let me take care of you.” Tom almost couldn’t hide his grin, of course he saw the empty flask and warning note. He paid no mind to them and vanished Harry’s clothes with a quick wandless magic.
“What?” Harry was still in shock, staring at his new born tail like he could not figure out why it was moving, “What the hell is this?”
“Don’t worry, you will be fine.” Tom finally could look closely at Harry’s new look., “Let me examine you. Stay still, will you?”
“O,okay?”
The tail was a close resemblance of a serpent, looking a lot longer and more flexible than Harry’s usual legs. Below Harry’s lower stomach, every inch of skin was covered in diamond shape scales with round edges. The scales were a deeper shade of green on the side and gradually pale towards the front. The pearly sheen on the scales catches light nicely, reflecting different shades of green as it moved around.
Tom knew exactly what he was looking for, he was not distracted by the beautiful scales for long. He found the genital slit between the scales. He pressed against the slit, rubbing circles and applying pressure around it.
“Tom!” Harry gasped, wiggling his tail trying to escape from the unfamiliar sensation, but Tom push him back on to the counter.
“Relax.” He ordered.
“I can’t!” Harry tried his best to stay still, but it felt different from what he used to. It felt like Tom was touching him over a layer of fabric.
Harry bit on his bottom lip to hold back his pants, it did not take long before a pink tip pushed through the bottom of the slit. Tom observed it curiously. It was different to a human cock, there was smooth with a slickly shine to it, slim on the tip, and got thicker towards the base.
He gently gave it a tug, and Harry gasp loudly, “Hey!”
Tom was kind of disappointed Harry did not have hemipenes like most serpent do. It would be fun to see if Harry would be doubly sensitive with two cocks.
Tom took his time to play with Harry’s cock, casually caressing it until it was fully hard, never removing his eyes from Harry’s pretty face, flushed skin and shiny scales, feeding on Harry’s panting and squeaking.
“Tom! I’m, I’m coming…!” Tom fisted his cock for a few times, white cum coated his hands and the scales around the slit.
“Ha……” Harry rested his head on the head cabin behind, his mind blanked and slow.
Tom did not waste anytime and focus on the slit. Harry’s cock was slowly softening and retracting to the slit. The slit is completely slick and wet and almost welcoming.
He tried to push his index finger into the slit, and it easily slipped into a warm tight hole.
Of course, the vagina was hidden in the genital slit, sitting right above Harry’s cock. Even though it was tight, but it was slick enough to have intercourse directly.
Tom added two more fingers without difficulties. The cunt was so wet and hot, sucking on his fingers like a skilled slut.
Tom gave it a shallow thrust with his fingers, it drew a long low moan from Harry. Tom could see the pink flesh sucking on his fingers along with every thrust, the edge was squeezed out of the slit, almost like two pussy lips.
He was about to eat this little serpent cunt out, but then he remembered the potion might not be able to last that long. With a regretful sigh, he decided to put it on his todo list in the future.
When Tom withdrew his fingers, they were cover in a thick layer of slick.
Harry almost fell to the ground trying to keep Tom’s fingers in him, “No…”
“Let’s get you somewhere safe, shall we?”
Tom apparated them to their room. Of course Tom had anti-apparition charm set up in their home, but Tom always left a back door for himself. He made sure Harry never knew, and Harry was too occupied with lust he probably would not notice.
As soon as they fell onto the bed, Harry’s tail circled Tom’s waist to pull Tom closer.
“Don’t rush, darling, I’ve got you.” Tom cooed, removing his own clothes with a snap of fingers.
Harry simply pulled him closer and bit on his thin lips. Tom loomed over Harry to deepen the kiss.
Tom brush Harry’s sweat wetted hair from his face, cupping his face to hold him in place. Tom’s cock was fully harden, the length slid up and down along the slit, coating in Harry’s slick.
Harry was getting impatient. His tail pulled on Tom’s leg, urging him to fill his emptiness, “Please Tom, please, I want…”
Tom obligated. He lined his cock up with the wet slit, it was almost sucking on his tip, wetting it even more. He bottomed out in one heavy thrust.
Harry’s eyes crossed, he letted out a high pitch moan, completely pinned into the mattress. Slick pouring onto Tom’s cock, rushing out of his slit, he came in an instant.
“Hmm, you’re so tight.” Tom pants. He gave Harry no time to rest, and started fucking him through his orgasm.
“No…no…Tom I can’t!” Harry cried, the pleasure was too much it was almost painful. Every thrust Tom pushed deeper, the tighter Harry got, the harder Tom became.
“Shhh…” Tom hummed beside his ears, “You feel so good.”
Tom kept praising Harry in a low whisper, soon Harry’s cock popped out of his genital slit again, rubbing itself on Tom’s balls with every thrust.
“Darling, you are full of surprise, aren’t you?” Tom letted out a breathy laugh, he didn’t know a Naga’s genital slit could stretch so much.
His hand moved to Harry’s cock, palming it lightly, giving Harry enough stimulation but also avoiding making him come too soon.
After a long time, Tom spilled his seeds deep inside Harry. He did not stop thrusting, shoving his cum deep into Harry’s cunt.
“You are stunning, my love.”
“Uhh… Tom, Tom…” Harry’s could not even process a simple sentence, he could barely call Tom’s name between his panting breath.
“Come for me, darling.”
With a shout, the orgasm took over Harry’s mind, his vision turn black.
—
With Harry bathed and tugged in bed, Tom returned to the kitchen. The mess on the counter top and two identical empty potion flask was vanished by a neat wandless magic.
—
“Good morning, darling. How are you feeling?”
“Hmmm…morning…” Harry’s hand fumbling around the bedside table, looking for his glasses, before he could found it, the glasses was put on his nose bridge. Tom was sitting beside his bed with a smirk. Harry yawned and stretched his back, “Good? I had a strange dream last night. I thought I grew a tail, and you…you…”
Harry paused, rouge rushed to his cheeks.
“Then? What have I done, darling?”
Harry wanted to punch that smug look off his face, “It wasn’t a dream! Oh Merlin…My feet!”
He kicked off the blanket and relieved to see his feet were back to normal again.
“I told you, you will be fine.”
Harry narrowed his eyes, “Did you know something?”
Tom’s grin had answered his question.
