Many years ago, the exact years is hard to say even with our scrolls recordings but I digress. Our kind was not born like this, it's not natural obviously; we were created unintentionally by humans.

It started out with an island many miles from here, the usual wildlife and such, among them was our ancestor. He had no name since he was a mere, normal purebred python, but we decided to call him Dalmar. It means versatile and adaptable which is exactly what he was and found this name to suit him.

At any rate, one day a disaster occurred, the island was chosen to be an experiment for an atomic weapon; many creatures were destroyed but the ones that survived were mutated from the effects.

Dalmar didn't look any different than he did on the outside, the main thing that happened was that he grew exceedingly intelligent, gained the hypnosis powers, and grew larger in size; much like an anaconda.

This is where it all began, he managed to escape once the humans went onto the island to take back any surviving animals to examine them when he hid in one of the crates and was taken aboard the ship.

The ship arrived here on this very island you're on now when he escaped into the woods, but cleverly observing the humans and their ways out of curiosity and to learn until one day…..it was the beginning of mating season.

The lustful urges alone is overwhelming as it is but there were no other serpents large enough to mate with and he wasn't attracted to them at all….he desired a human.

One in particular caught his eye and when she was alone gathering water away from her village, he took her. Dalmar carried her away deep into the jungle and hypnotized her into submission before mating with her, only to find out he gained human organs as well.

He himself did not know whether he could actually mate with a human or not but he could, succeeding on mating with the woman and then she bore him two offspring.

This is how naga's came to be, a mutated serpent and a human mating together to create us; though back then the siblings usually mated with each other but found out quickly enough the infants usually died. Since then we grew in population, trying to find mates among humans instead of naga's since we're all related through blood and originate from the very first naga, whilst also keep learning from humans since scientists and researchers still venture to this island.

Very easy to see how our reputation grew over the years among the villages here but we hid our existence very well fortunately to any outsiders. Only fools would travel this deep into the jungle; even the hunters wouldn't dare to cross our borders.

"What happened to the woman un?" Sasori shrugged, "It was never told, my guess is she stayed with Dalmar until she died of old age as did he. Once we learned to write it's been handed down through the generations what Dalmar's story was and how our kind came to be."

Lexy raised her hand, "So…um…how did he mate now?"

The redhead chuckled and drew a few more details on the chalkboard and pointed at the picture, "From the waist down our kind is identical to a serpent, but there's an additional accumulation to our bodies. Right about here, there is in fact a penis and scrotum underneath, whereas females a vagina. It's hidden from the eye for obvious reasons since it's a vulnerability just like with a human, merely hidden and protected by a few layers of muscle."

His brown orbs glistened with mischief at his class's faces, but even more when he mused seductively, "I would be more than happy to demonstrate this, who wants to volunteer?"

All eyes grew as wide as saucer plates in shock but even more so when the redhead called on his human, "Deidara, come up here please~"

The blonde slowly shook his head but when his master bitterly asked again he stiffly stood up, praying in his mind Sasori wasn't serious about this.

He went rigid and bit his lip when the serpent made him sit on his desk, his knuckles turning white from gripping the edge so tightly as the redhead leaned in and licked the side of his neck, nibbling the tender flesh with his fangs affectionately.

A hand went through his blonde locks before gripping onto the back of his neck, Deidara's face was pure red from blushing so badly and the embarrassment; his breathing grew rapid when the snake's lips brushed across his so teasingly, but not as bad as the tongue flicking out and tasting his quivering lips. Sasori's hand slipped up his thigh before making its way to the blonde's groin, not quite making contact when he gave a feathery kiss to his human.

Then it happened, out of nowhere he stopped cold turkey and smirked almost evilly before turning to his students. "You can stop ogling my actions now." He chuckled at their faces; the humans really did think he was going to actually violate the blonde right in front of them.

If anything they ALL were blushing: Tobi had covered his face with his hands, Olivia was biting her knuckles, Itachi merely had his mouth partly hanging open, Deidara looked on the verge of passing out whereas Lexy was indeed passed out with a nosebleed.

He chuckled and mused, "Give me some credit for having a sense of humor~" Tobi stiffly raised his hand and asked, "Um…uh….what about the…the mark?"

Sasori mentally slapped himself for almost forgetting and slithered to the unconscious teen and gently slapping her cheek, "Wake up girl."

Lexy panted hard when she came to and looked around, "What I miss!?" The woman sniggered as Sasori rolled his eyes and handed her a tissue before continuing.

"The mark is as it sounds, we pierce our chosen mates or any property we see fit for all our kind to see. For example, if I marked Deidara he would officially belong to me. Not only will there be a permanent bite mark on his neck, which will scar over time, but my venom would course through his body and if any naga dared to try and mark him as well; it would backfire. A very painful experience indeed with another serpent's venom in their system; but it won't kill them though."

Itachi murmured, "How is that possible? Wouldn't your venom kill him?"

Sasori smirked, "Excellent question Itachi. Mating venom isn't hazardous but will stay in the human's body in their bloodstream for years. As for the toxic type it actually depends on the type of naga, for example I am not a venomous type through bite; my poison comes through the spikes on my tail that I can produce at will. Not all of us are poisonous, but the ones that are through their fangs have two selective chambers that are always sealed off. One is for their prey the other to mark."

Olivia raised her hand, "But...why are there so many different types if you all originate from the same snake?" Sasori sighed, "We cross-bred at the beginning remember, and thus gained many different techniques over the years; the humans we mate with have an effect as well surprisingly. I believe this subject has been covered as well as it can be for now, anymore questions?"

No one raised their hands as he nodded, "Very well, you're dismissed and I need to give you something Olivia before you leave. Brat, stay here."

Deidara cursed under his breath because he was more than ready to get some fresh air and get over his little…problem.

The woman slowly wobbled over and took the note her teacher gave her and murmured a small thanks before leaving.

*Sasori had a small conversation with their masters and they seemed pleased enough, but Kisame burst out laughing as did Hidan among their human's reactions.

The blue snake couldn't stop chuckling as the feisty teen glared up at him snarling, "NOT a damn word!" He innocently smirked but choked back another fit of laughter, "I wasn't going to say anything kitten~"

Hidan merely kept grinning at the raven who's eyebrow was twitching uncomfortably but said nothing, but he did have a bad hunch the albino would badger him about it soon enough.

The woman handed the note to Kakuzu, who nodded before picking her up as she blushed a little. "I can walk." "I know, but you don't need to strain yourself with your injury." He caught the small smile she gave him and inwardly was relieved since he thought she was still angry with him, maybe things might work out better for him now.

Zetsu just had to muse with his human, "You're still blushing?" "Tobi can't help it! He thought he was about to have a heart attack if Sasori actually did it." "That would be an amusing sight, I'm just sadden you're aroused by it than with me."

Tobi instantly hung his head and groaned bitterly, "Am not." Zetsu's smirk widened from the grumpy tone and rather liked it, but left it alone and just ruffled his hair chuckling.

*Back in the classroom the blonde was impatiently tapping the desk trying to get his mind off what just happened; the redhead never and I mean never touched him like that yet but he knew he wanted to.

Deidara could see the lust in his eyes and remember the times when he thought Sasori was going to molest him but he never did, he only did what he did like today; light feathery touches and never quite making full contact.

The blonde hated the redhead for it and sadly it was torturing him like hell. He was needy and wasn't getting any release….like always….he wondered why was he even here in the first place now.

His groin was unbearably tight and glanced around to make sure no one was looking before unbuttoning his pants and stroking his hardened length, he groaned a bit from the erotic feeling and tried to cum quick but he was too late…..he felt hot breath against his neck.

A small chuckle rang in his ears as his master mused, "Couldn't wait for me brat?" Deidara just went rigid like before, watching with half-lidded eyes at the serpent firmly removing his hand and tugging his pants further down with his tail.

The redhead caressed the hardened length teasingly before gently pumping it, savoring the small moans from his pet and nibbling on his neck from behind. Yes, he tortured him on purpose to make sure to get what he wants.

He tortured himself as well during these past few weeks but it was well worth it; Deidara despised him in the beginning but slowly was getting use to him, even sexually, Sasori was merely waiting for the blonde to crack and want to desire him without question before he took him to bed and give him the ultimate pleasure.

A restrained groan escaped the blonde's lips as he came, the redhead watching with glee at the spurts of cum falling onto the floor and his hand before murmuring, "Are you ready for more appropriate physical contact?" "Ye…Yeah un."

He was beyond pleased hearing this since he knew his brat was proud, this meant he wanted him at last…and badly from how needy he was.

He took his shirt off and his tail removed the pants all the way, the serpent attacking the smooth neck with kisses and tiny nibbles, pinching a nipple before lightly rubbing it to hear a few small pleasured sounds.

Sasori moaned himself when he finally made the full contact on his brat's lips, firmly molding them but Deidara wanted it rougher and eagerly begging for his tongue to enter.

Smirking into the heated kiss he let him dominate his own mouth hungrily, squeezing the round cheeks and lifting him onto the desk, using his tail to remove anything that was in the way. The blonde's length was rock hard again and whimpered when the redhead grinded against him, the scales hurt a little from catching onto the soft flesh.

Sasori hummed in approval when he shoved his fingers into that salivating mouth, loving the feeling of the eager tongue rolling on the digits before removing them; he inserted two at once and made the blonde cry out in pain, but muffled the sounds as he probed him fairly quickly; he was needy too.

Deidara moaned when he felt that certain spot being prodded against, wrapping his arms around the redhead's neck and deepening the smoldering kiss until Sasori pulled away. "D..Danna un?"

"You do realize I'm going to mark you." "So un?" The red snake scowled but suckled the blonde's lower lip, "Are you willing to accept being my mate?" The blonde nodded with a blush, "You won't let me go anyway so why not? As long as I'm not just some fuck toy un."

The redhead chuckled and kissed him again, "A mate is never just a fuck toy…not to me anyway." Feeling like the matter was resolved he relaxed his scales and muscles hiding his erection, the pain was intense being pressed so tightly behind the safety walls, but now he could let it be out freely.

He gently pulled it out from its confinement as the azure orbs watched with interest before inserting his length, rather too quickly since he was already buried to the hilt inside that tight ass.

He silenced his brat with a searing kiss since he hissed and cried out in pain, clawing his back until the redhead pinned his wrists against the desk and remained still to let him adjust.

It took a few minutes before he began moving with a moan, the blonde whimpered like mad but it soon turned to pleasured noises and wrapping his legs around the serpents waist.

"Da..Danna…shit….ah~"

Sasori groaned right along with his human, picking up the pace and pounding into him harder and faster. Panting hard he stroked the blonde's weeping length with a smirk, Deidara gritting his teeth and trying to fight back his upcoming orgasm when he let out a silent scream.

Sasori sank his fangs into the human's neck and released his venom, the blonde instantly cumming and arching his back, writhing almost violently before passing out completely.

The redhead had already cum at this point as well, savoring the bliss as he suckled the wound on his new mate's neck with a small grin.

Gathering his wits about him he glanced at how late it was before lifting Deidara into his arms and gathering his clothes, cleaning the mess he left behind and slithering back to his chamber.

"What a fortuitous day indeed~"

TBC:

TA-DA~

Hope to see some reviews and sorry for the long wait for this chapter XD

I bet you didn't expect the full smut did ya LOL