Shirou sighed in relief as he put down down the perfectly reinforced rock down on the mat of his shed.

He was happy that Iris had fixed his Magic Circuit problem. Now he could use his native ones instead of converting his nerves into ones. Allowing with teaching and telling him about his Element and Origin both being sword. Which he had asked if that made him a sword Incarnation or something like which?

Which she responded to by slapping him. The Anthropomorphic wolf sounded practically offended by his question. Telling him that such a thing didn't exist, and that word meant something else. But he liked the term, so he kept it, as made it sound like he had a superpower.

Well, he actually had one, that being his Reality Marble that he gained from having that Sword Element and Origin.

And speaking of Iris, it had been over a year now since he had met her on that snowy day near the Graveyard, where she had just been a little wolf pup and not a dog like he thought when he had found her. He still remembered accidentally inserting his fingers into the canine cunt he was now so familiar with and tasting her fluids. And he had been practically hooked ever since.

And so over the course of the year, the now fourteen-year-old had lived a life of debauchery as he fucked the Monstrous Beast that was Iris day in and day out. And then her fucking him the ass then she had grown her canine penis then she had evolved becoming even lewder than before.

Shirou knew he had become addicted to the taste of her sweet cum like Taiga had after having become a part of their hedonistic life after accidentally walking in on him fucking the newly evolved monster wolf. Taiga now being pregnant with Iris offspring after unloading her cum into his olde,r sister's cunt. And after she had given birth, Shirou knew it would be his turn to impregnate her like, she had made him promise.

If Shirou even was going to be a 'he' by that time. As Shirou had obviously noticed over the year, his body had started to change even beyond the usual puberty stuff. His dick, the now half erect meat that had snaked its way down his pant leg, due to his reminiscing. At full it would now be measured to be about thirteen inches in length. Much larger than any human male would ever have. It was still human-shaped, but if it's current growth rate would belong on a horse instead.

Along with his large testicles that produced a ludicrous amount of cum. His last measuring had been a litter of thick fertile cum. But those had been his only male kind of growth. The rest of his body, however, was going down the more female route. He had no hair on his body, his skin becoming smooth and soft, despite his abs. His thighs were getting bigger, his ass getting larger and hips getting wider. And on his chest was getting puffier so to speak, his nipples almost constantly erect and sensitive. Shirou would almost say that he was soon going to have at least A-Cup going at this rate. Sometimes he even checked behind his ballsack to see if he would find vaginal lips there. Though he figured that would soon be a reality, as an hour ago, he had used Structural Analysis on himself and saw that in his abdomen that he was growing something that looked close to a womb.

How he wasn't in any pain, he figured to because of Iris' magic that furthered the change as he had more, and more sex with her. And drank her fluids. Which was probably the biggest cause for the change.

It had even affect Tagi, as her body had become much more feminine and voluptuous, and saw that her clit was starting to get much large even poking out of its hood fully. The thing was probably going to develop into a majestic cock that would fuck him.

Not that that bothered him. Shirou actually looked forward to the changes being complete. Dreaming about carrying Iris' children like she was currently doing his.

For ones in his life, Shirou felt a genuine sense of happiness that he did not feel ashamed of like he used to. That oppressing guilt of surviving the fire no longer weighed on his shoulder. As his Survivors, guilt as Taiga and Iris called it had been practically fucked out his body. Though that had been replaced with what could have been called an addiction to sex.

Sure he still liked to help people, but that pressing need to save people was no longer on the forefront of his mind. To make other people happy. Cause he did that daily as Taiga and Iris moaned in happiness as he fucked their pussies.

The wolf had once joked that Shirou should go around being a hero and making people achieve happiness with his dick.

But that had ended up being true latter. As it was practically no secret that Shirou had the biggest penis in the entire school. As most of his male classmates saw it while they changed after gymnastics. Not that he was ashamed of being stared at while in the shower, Shirou kind of flattering. He had even found Shinji staring with a heavy blush the one time had sported an erection. Though he had left the lockers left to blow his load as so to fit it in his pants.

But with them experiencing puberty, and hormones running through their bodies. Which had let to a very interesting development with two of the boys from his class, who were definitely gay. Asking after probably searching the internet with safe search off. If they could have sex with him.

Shirou had been seriously flattered by their request and so obviously obliged their request. As Shirou, at that point, had realized that he had been totally corrupted by Iris' lustful and lewd ways.

And so after school the three of them had sneaked over to the abandoned toilet facilities that had been decommissioned due to new ones being made. There he had ridden his classmate's dicks for all their virgin cum into his ass. They didn't have a monstrously large cock like Iris did, but them unloading into his butt had been pleasant all the same. And they had finished the session with the two sucking on his cock and swallowing his sperm.

Though with them sucking his fluids he wondered if they would change like he had. Though that would probably take some time as he had only reached this level of change after a year of almost daily sex. Though the image of them turning into well hung Futa was amusing as they sucked on his dick.

Though after that round of sex he was pretty sure the two twins would enjoy each other's sexual company. Instead of requesting him for sex, though he had to see on Monday.

Though he couldn't hold it back anymore. As due to his reminiscing his dick had grown painfully erect down his right leg.

Shirou quickly pulled down his pants and let loose his erection into the air. "Ah!" He moaned as his fat member felt the cold air of the shed. Precum was running his length, as it throbbed and begged to be stroked and ejaculate.

His hands didn't even reach all the way around his oversized cock as he masturbated. He was so fucking sensitive right now that after a few strokes he orgasmed a came a literal bucket as he let loose into one that was off to the side.

Shirou sighed with relief as he looked at the supernatural sized load that now filled the bucket. And now with it being out his body, Shirou could smell the heavy musk of his thick and sperm-rich cum.

He could feel his need for it as his mouth watered. And just like that his cock was back into action standing erect and his testicles the size of an adult male's fist. Was back to producing cum for him to unload.

It seemed that his current lust couldn't be satisfied with just masturbation.

And with thinking about the fun, he had with his classmates he wanted to have Iris' cock inside of his ass.

At that thought, he quickly left his shed and bucket full of cum and ran quickly to the main house across the cold ground.

Shirou quickly entered his bedroom, his lust and familiar connection to Iris guiding his lustful mind. His cock throbbing with need as it spilled precum unto the floor as he walked.

And there laying on his futon was Iris asleep and sprawled out. The Anthropomorphic wolf having no sense of decency as she was fully on display.

Her eight wonderful tits' nipples were fully erect. Her pregnant stomach growing with his young ready to give birth in two weeks time. Her pregnancy progressing a lot faster than a human's.

And the there was her dick, her large lupin dick standing erect as she slept, leaking precum. And then there were her large cantaloupe-sized balls, contained in a furry sack that covered up the slobby mess that was her triangular cunt.

Shirou took off his shirt and the rest of his clothes and now stood naked in front of the sleeping Iris.

Shirou took hold of her red member and guided it to his asshole, and soon enough he slid down it, like he had done so many times before, his butt easily stretching to accommodate the lubricated cock.

And Shirou began to fuck himself, on the read spear his cock shooting out precum as his prostate was stimulated by Iris' cockhead.

Though his stimulation of her cock soon caused the wolf to awaken, she smirked as he rode her cock to get off. "Shirou you naughty boy using my body like this while I sleep. Though I think you're becoming less of a boy aren't you?" Iris asked she as took and pinched his hard nipples, on his developing female breasts. Shirou just moaned in response as he continued to ride Iris' beautiful cock.

"Hmm, you're becoming a futanari aren't you? Becoming just like, slowly transforming due to my sexual fluids. Do you like it Shirou? Do you like how your body is changing?" She asked.

"Yes, I do! I can't wait to have soft, pussy to have your children. I want to be just like you." He responded through his moans, the pleasure filling his body.

"That's great to hear, I would change you manually, but I'm not fully evolved yet, so continue to have sex and impregnate me Shirou." She said as she began to thrust more and more her cock into him.

"Yes, I love you, Iris." He said earnestly.

"Love you Shirou, I love you so much. Ah, I'm cumming!"

"Me too. Ahhh!" He shouted as his dick and ballsed convulsed and sperm shot out of his dick coating the wolf beneath him. Staining her white fur with even more white cream.

And at the same time, Shirou felt his stomach expand as Iris stuffed him full of her delicious baby batter.

Shirou was soon after dislodged from the lupine member and laid on the right side of Iris, the two lovers cuddled into each as they slept.

Xxx

A/N: If you like this or any other of my stories, you can donate to my P A Treon. com (slash) StreamingViking and read commissioned stories. And chapters before they are released here. And Forum to let people know myforums/StreamingViking/5698335/