I, The First Woman[DXD/Lilith!Futa!SI] – Chapter 1

This is the finished version of the chapter as, I wanted to post something today.

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What did you do when you were reincarnated into an anime that you knew from your previous life? Try to obtain power? Steer the course of the story you wanted in your direction using the Meta-Knowledge that you had from your previous life?

Or did you just do nothing because you realized that you essentially had no special talent, no hidden talent, power, or secret heritage, leaving you just the same bog-standard human that you were in your previous life? All the while, your brother would eventually go on to become one of the strongest beings in the setting because he won the literal heavenly lottery?

Yeah, that was currently my life as Isane Hyoudou, twin sister of Issei Hyoudou, the protagonist of the popular Light Novel High School DxD, The Red Dragon Emperor, lower of all things Oppai, and could get the salary man Bad End?

…Was I a little bit bitter and jealous about my circumstances? Yeah, but who wouldn't be? And it was not like I hadn't tried; I had even found an Onmoyjoi and asked if he could teach me so that I at least had something to give to Rias so that she would Reincarnate me alongside Issei. But I proved to have no talent for it, no talent for magic, no Sacred Gear, and I wasn't in a version of DxD that was a crossover with something like Bleach so that I could go and see if the Plot Rock could do stuff.

Nope, I was just living in standard DxD, it seemed, with no avenue to actually grow in strength, only having the faint hope that maybe if and then Rias made my brother a Devil(Because as if I could stop Raynare from killing him.)

And speaking of Issei, he was… a pervert of the highest order, but he was my brother, and he loved me.

Genuinely and wholesomely to the point I had actually fallen for him a little, as he tried to be the best twin brother in the world.

Always giving me his toys, games and letting me have a go at the candy first…

Though it hadn't started out that way, as we had been bickering siblings before I regained the memories of my previous life, but then we had been eight. He had gotten the scare of his life as I had been pretty close to death, as my younger self had climbed a rather tall tree.

The branch had then broken, and I had then fallen and hit my head, which was the incident that had woken up my old memories, alongside breaking a leg rather badly.

Which still bothered me as to this day I walked with a slight limb.

According to our mother, Issei had then rushed into the house crying and screaming that I was not moving and saying it was his fault for daring me to do it.

Not that it was; I had been a stupid kid.

But you couldn't really argue with Trauma.

And ever since, Issei had been attached to my hip and slightly overprotective of me, which… was actually a pretty nice feeling.

Though that did not mean Issei himself stopped being kind of a dumbass, as I had just walked in on him drawing a magic circle in the empty garage as currently, Mom and Dad were out of town on their wedding anniversary, as they always did during Spring Vacation.

"Issei… what are you doing?" I asked my brother who finished his rather nicely drawn perfect circle, Issei always had a talent for the arts, and it was something I had encouraged. The biggest reason for his pursuit was that I had told him if he got good at it, he could draw all the oppai he wanted.

And nothing motivated Issei like tits did… That made me wish I had my own; at least if had fat tits, I could catch my brother jerking off to me and use that as a jumping-off point. But sadly, it seemed that, unlike me, my brother had no sexual desire for me.

And again, I got the short end of the stick, as I had no ass and was even flatter than some of the elementary school students at Kuoh.

While Issei had a big dick, going by the erection, I had seen the one time I had walked in on him showering.

"Hey, Isane," He greeted back with that handsome smile of his. "I am trying to summon a Succubus so that I can touch some Oppai and lose my virginity!" He declared in joy.

If you want to lose your virginity, I've got a perfectly good pussy right here for you to fuck. I thought, but I did not say; instead, I said. "So, how are you going to summon a Succubus?"

"With this book," He answered as he held up a clearly old tome. "Went to the used bookshop like usual yesterday, and there I found it between some of the doujins. I got curious, opened it and there it was written in plain English. Which I am now really happy I learned."

"Bet you are."

"Yeah, wanted to impress and score Amercian babes after we graduate High School," Issei said, as our parents had promised a trip to the US, when we graduated from High School with above-average grades. "And I guess that was what you were reading all last night?"

"It was, and I figured why not try it," Issei said as he completed his Summoning Circle, and with my meta knowledge, I knew that I should probably stop his as this would probably summon a Devil.

That was if it worked.

And if it did… this might be my chance.

"Alright, just don't come complaining to me if she sucks your soul out through your dick," I responded, and Issei got a small look of concern on his face at my statement.

"I don't think that will happen," Issei said confidently and now had probably invoked Murphy. And with that, Issei began the chant, and to my surprise, the chalk circle that he had drawn actually lit up as he spoke in what was horribly butchered… something.

It sounded like Latin.

"Come to me, OPPAI!" Issei finished, and I couldn't help but facepalm as a puff of smoke exploded from the circle, but I couldn't see anyone standing in it.

"Well, Issei, thanks for confirming magic is real, and that you are also not very good at it," I teased.

"Aw man," Issei groaned as he sat down on the garage floor, and here I thought I could get laid," Issei complained. "Well, I don't think it was a total failure."

And with that, I looked back at the circle, and on it, I saw something present that wasn't there before, it being a mass of… red something, the mass slowly jiggling in place.

"Well, congrats, twin brother of mine, you've successfully summoned a goo monster," I said.

"Well, it's a star-Isane!" Issei shouted and before I could react, my face was suddenly enveloped by the red mass that had with extreme speed at me. "Hey, get off my sister!" Issei shouted as. I could tell he was pulling on the thing, as I felt my body being pulled forward a bit.

I tried to open my mouth to tell him to stop, but that was a mistake as I immediately the mass got into my mouth and started moving down my throat like it wanted to be vored by me.

I could feel it polling in my stomach by the sensation of my stomach being stretched out, until suddenly I could see and breathe again. "Isane, are you okay?" Issei asked in worry.

"I am fine… I think," I said as I looked down at myself, where I could see my now-inflated stomach stretching out my sweater. "Oh, that is weird."

"I am so sorry," Issei began apologizing. "I shouldn't have tried to do the thing, I went and go, and you hurt again."

"Shut up, Issei," I said, as I wasn't going to have him go and be miserable again. "You didn't know this would happen, I didn't know this would happen, actual working magic? Who would ever believe that?"

"I guess I can't argue about that, but ugh… should we get you to a hospital? Because that thing is in your stomach." Issei said as he looked down at my round, almost pregnant-looking stomach.

Pregnant…

A shiver went through my body, and I suddenly felt my body started to get a lot hotter as I could feel the mass move inside of me, spreading through my body, becoming a part of me.

"I don't think we need to; I actually… hmm, feel kind of good actually," I said as I felt my voice get husky, like when I was horny…

I was horny…

My pussy, my nipples, my entire body was aroused, and these clothes were restraining me.

Xxx

Issei didn't know what to do, as for a second, he thought he had severely hurt his beloved twin once again.

As the creature that he had somehow summoned, (He didn't think it would do anything; he just wanted to do it for fun. He hadn't, as Isane had said, expected magic to be actually real.)

"I don't think we need to; I actually… hmm, feel kind of good actually," Isane responded to his question, and then a second later, Issei watched with shocked eyes her clothes burn off her body.

Revealing to Issei the glory that was his petite sister's naked body, and instantly, he cursed Little Issei, as it instantly reacted to the sight of a naked woman. Even if that woman was his sister.

"Hmm…" Isane moaned, and yeah, that was very much a moan as she cupped her chest. "Did my breasts get bigger?" She asked in a tone of voice that Issei had never heard from her before.

And she was right; they had gotten bigger. Issei, the Master of Oppai that he was, could tell that Isane's barely there A-Cups were now full on A-Cups, and he could now very visibly see them expanding in size further as Isane's hands were pushed away by the expanding flesh. And Isane's breasts weren't the only thing expanding.

As Issei could see, her hips, thighs, and but were also gaining more meat, meaning that his amazing sister was going from stick figure to beauty by the second.

And it was not just her assets that were growing, but also her body as Issei could see her literally growing in height as Isane went from being shorter than him to being taller but at least half a standard ruler, putting her at rather amazing 180, putting to shame the vast majority of Japanese women. And also, she was gaining muscles in her arms, and her stomach as her expanded stomach had now vanished. Replaced by a six-pack.

Issei just watched as his now rather Amazonian sister continued to transform before his eyes; he knew he should probably run, call for help, do something!

But Issei couldn't take away his eyes from Isane as she continued to change into a new person, no an entirely new being. As her skin went from normal human to an actual pink, pink coloration, and from her back, a thick pink tail emerged that slapped against the floor as it grew into its full amount. Her short brown her grew as well, going from the same style as him to a full mane of hair that went down to her back, but it did not stay brown as it shifted to a silvery-white coloration.

"Hmm," Isane moaned again as one of her hands went from her now double tits, with thick nipples to match, down to her literally pink vagina, which currently had her rather large clit poking out, which she started to stroke with his her fingers. And as she did, he watched the clit get longer and, with each motion, as well as thicker. And soon enough, Isane was no longer stroking a clit, but a cock.

His sister was now jerking off a genuine penis that had already surpassed his in size and was still continuing to grow, and as it did, Issei felt his cock strained against his pants. For he did have a fetish for futanari hentai. Isane was now actually hitting many of his fetishes.

"Hmm." His sister moaned as stoked her new futa cock, her brand new futanari horsecock, which had a pair of heavy balls the size of cantaloupes swinging down below that were churning with cum as she stroked the thickest and longest cock Issei had ever seen, as her hand didn't even go halfway around. "Fuck…" She cursed, and then Issei watched as the flared stallion head erupted in a geyser of cum that splattered across the garage floor, some of it even landing in his agape mouth that he swallowed in reaction.

And much to his shock, he found it tasty.

"Hmm, that was amazing," The person who may or may not be his sister spoke as she opened her eyes, Issei could see they were no longer the blue ones she had inherited from their grandfather, but instead, her eyes were red, surrounded by a sea black.

The petite human teenager turned adult demoness stretched out her body, her equine cock bobbing up and down at she did so. Her body was now that of a seductress, as she had tits the size of her head, and a curvy body that matched it.

"Isane," Issei spoke for the very first time since she had started changing. "Is it still you?"

"I am still me, Issei," She spoke. "I am still Isane, but I am also more now, something greater. I am Lilith, the First Woman."

Xxx

Fuck did I feel fucking amazing as I could feel the power flowing throughout my entire body as new knowledge entered my head, the knowledge and memories of Lilith.

And I became Lilith, and Lilith became me.

And I knew that this…

Fuck that tree. I thought, but thankfully, we were all freed from its machinations and were now free to do as well please, and while I did have future knowledge of this world thanks to this world, I was not chained to it like I had been before.

"Like that demon from SMT?" Issei asked.

"Kinda, but the real deal," I said as I cupped my breasts. "A lot sexier, and despite my new appearance, I am still human at my core." I pinched my nipples as I let out a moan, and I couldn't help but smile as I looked at Issei and the erection that he was currently pitching in his pants.

Finally, I was sexy enough to get a reaction from him, for I knew I was hitting several of his fetishes.

I wanted to have so much fun with him, but the garage wasn't really a good place to have sex in; I wanted to do it on a bed or in a bedroom, at the very least.

"Well, I am going to go and have fun with my body," I said as I went for the door to that led into the house proper. "You are welcome to join me, bro."

The noises he made were like music to my ears as I walked, seemingly pulled along by my massive horsecock, the thing I-Lillith had used so many times on Lucifer, and other Satans as they were just sluts.

And that was a bit of a surprise to me that they were females here as my Old Life Memories said that they were males.

Would still have broken their bussies on my dick if that were the case; the thought made my leathery ballsack that contained my heavy testicles churn with an unending amount of cum.

I made my way into my bedroom and plopped down on my futon, my heavy balls resting between my legs; my thighs were so thick now, and my nuts were so large, and my cock was so fucking big that not even both of my hands were able to wrap around as started to jerk myself off.

My tail(something the old Lilith had added to this 'combat form' of hers when she found people she needed to keep people away while casting a more complicated spell) slapped against the mattress as jolts of pleasure went through my body.

And as I jerked off my cock it took about five minutes before the door to my room cracked open, and I looked at the door frame to see Issei standing there looking both nervous and wide-eyed as he looked at the dick that surpassed him in size several times over. But that was nothing to be ashamed of, this dick was custom-made to mind-break haughty supernatural bitches, and Issei was of a very respectable eight inches, which was way above the average for a Japanese teenage boy not even done with puberty; then he was done he would probably reach nine or even ten.

"Hey, Issei," I greeted him. "So, did you wanna have some fun? Is there something you wanna do? You wanted to summon a succubus to lose your virginity, too, right? Well, I am not a proper one, but I think I can act the part." I went and made a blowjob motion with my hands.

"I… Isane," Issei said my name, and I could see his penis getting harder in his pants, as he thought an internal battle within himself, though one I was assisting in achieving a certain outcome as I made my pussy leak out pheromones to make him want to fuck me even more. As I wanted my precious twin brother to breed this body of mine. "Are you sure? Is this even something you wanna do?"

"Issei," I said as I crawled over to him and his eyes almost fell out of his skull as I pulled down his pants, his crotch right at eye level with me as his cock landed beside my face as I pressed my head into his well-shaved crotch. "I loved you, and I don't mean in a sisterly manner; I love you like a woman does a man, and I've been trying to make you notice me, but you never took any interest in my body despite all the sister porn on you have."

"You know about that?" Issei asked in shock, and I rolled my eyes as I brought my hand up to wrap around his dick, the boy letting out a his at my touch.

"Of course, but now I can see that your body is definitely liking what it is seeing. Did I need to become a futa demoness for you to think about fucking me?" I asked as I began moving my hand up and his dick.

"I… always did," Issei said, and I was about surprised by that statement. "I love you like that, too, Isane. I… just didn't want to take advantage of you because you're my twin; I felt bad enough feeling that way; I didn't want to use you."

"Issei," I said with a sense of deep love in my voice, as he was such a gentleman when he wanted to be. "I am going to give you full permission to use me in any way you want; let us make love to each other as brother and sister, as lovers; let us indulge in taboo; let us break from morality and take the world as our own. Let us make the harem we desire."

Issei took in a deep breath.

"Give me a blow job, sis, show me what this new sexy, oppai body can do," Issei stated.

"With pleasure," I replied as I moved my back and then aligned my now full lips with Issei's leaking cockhead, giving it a kiss.

And then I moved down, taking it all down my throat in one go.

"Oh fuck, Isane!" Issei moaned as my dexterous and elongated tongue wrapped around his cock as he started to thrust his hips, the teen automatically skull fucking me as he desperately tried to get off as fast as possible.

As the sensation of a blowjob was just too much for Issei's virgin mind.

Not that I was complaining, as my lips were now an erogenous zone, so him moving his cock back and forth across my tongue, and my lips were making my pussy and dick squirt a little as my juices oozed from my new body.

"Isane, I fuck, oh I didn't think this would feel so good, oh by the many Kami, I am cuming," Issei groaned, and I got a taste of his cum, and it was a delicious meal.

Sadly, it didn't last long as Issei was a normal human, and while this world was ecchi, it was not a full-on Hentai.

Not yet, anyway. I thought like a mischievous gremlin as I was gonna indulge in all the lewd shit as possible. I was gonna bend Rias over a table, make Sirzches into a slut, show Zekram that he was still just a whiny little bitch boy who only good for sucking Mommy's dick, Rizevim, to the little shit, was gonna get a fucking spanking. He was gonna become a she and understand that they were no different from their mother.

But first, I had a twin brother to make into a man.

I pulled Issei's cock out of my mouth and swallowed the decent load, and thankfully due to my pheromones, he was still raring to go, though if I wanted to be satisfied, I needed to enhance those balls.

Though that would be later, I would first let Issei experience pleasure as a human before I converted him into the ultimate stud.

And breeder as Issei was gonna join me in futa domination.

As I wanted to breed Issei, just as much as I wanted him to breed me.

"Delicious," I said as I showed him there was nothing left in my mouth.

"Though that was… wow," Issei said as he fell to the floor, trying to breathe steadily.

"So, how was your first blowjob Issei? What did you think about the skills I inherited from the First Woman?" I asked as I crawled onto his body, and pressed my tits against his body, my cock laying on his as our faces practically touched.

"She… must have been a real slut," He stated, and I smiled as I pulled away.

"I was… she was…" I answered as I pulled away from him and then turned around as I sat on all four presenting to Issei my pussy, my heavy balls swinging down below it. "So you ready to become a man, Issei?" I spread open my pink pussy to show off the even pinker insides of my love tunnel. "Or do you want something more exotic?" I asked as I began transforming my pussy into various animals shaped ones. Dog and horse were the more standard outones.

"Ehh, I take the normal one," Issei said, and I switched my pussy back to my standard pussy with its engorged lips.

"All ready and moist for your dick, so come breed big sis, bro." I shaked my ass.

"You were only born a few minutes before I was, and I will, you freaking slut!" Issei said as he grabbed my hips and started fucking me doggy style.

"Oh fuck yeah, Issei!" I moaned as I felt his cock spread virgin pussy, the flesh malleable, and adjusted itself to the size of Issei's dick for maximum pleasure as he truly mounted me and started thrusting like a dog in a rut.

And I was his bitch in heat.

Which I was.

His found my tits and started mauling me with his hands. "Isane, your Oppai feels so nice."

"Glad you like them, Issei, I like having actual tits now too, not as big as the Onee-samas of Kuoh, but I think they are pretty good," I stated as Issei kept making love to me like a rabid animal.

"I think they are perfect; they are just the best ones for you, Isane, I love them! They are so soft to touch, I finally got to touch Oppai, and they are my sister's tits!" I shouted as his pace kicked up, his smacking into my ass, which also resulted in our balls hitting each other.

But in a nongay way…

However, that worked.

"Isane," Issei moaned, and I could his thrusts get more erratic, and I knew he was getting closer to blowing his load in my pussy. "I am about to cum."

"Yes, fucking do it, Issei, cum in my pussy, breed me, breed your sister with your children," I moaned as my soft body jiggled at the breeding sex that was currently happening.

"Ah, Isane, get pregnant, get pregnant, get pregnant, get pregnant!" Issei shouted as 'plap' sounds echoed through my bedroom. And as he said that, I could his cock expand inside my pussy as his seed flowed deep into my pussy and into my womb, where my waiting eggs were assaulted by his seed, and I came several times over as I felt myself getting knocked up by brother, my body also rejoiced as it missed the sensation of procreation through either my womb or my dick.

And speaking of my dick, Issei was currently giving it a titjob as he moved my own tits up and the horsecock that was so erect that it was standing fully vertically/horizontally in my current position.

And so, with that and the feeling of getting knocked up?

I came from my dick as well as my pussy, coating the floor with thick gooey semen as Issei pumped his sadly human-sized load into my womb that, still hungered for more cum.

But thankfully, my Pheremones was boosting his stamina and regeneration of cum, so Issei blasted three more loads of cum into my womb.

After this, he was so exhausted that Issei closed his eyes and, not even a minute later, fell asleep as we had been fucking for about an hour.

Though thankfully, with him asleep, I got to work my biomancy and astralmancy on him.

And I couldn't help by smile as I found what I hoped for would be in the depths of Issei's soul, in the layer that was called Da'at.

Which was where all Sacred Gears resided.

"Hello, Ddraig…" I said as I woke the dragon.

[… Oh shit.]

"Rejoice, Ddraig, I shall free you from this prison, but well, not in the way you want," I said with the smile that even made the Devil herself shit herself.

Xxx

"What do you mean she is gone?" Rizevim Luficer asked the Lucifuge before him.

"That she is gone, sir," The Devil repeated. "We were doing cleaning in the laps and saw the tube was empty."

"Yeah, but how?" Rizevim asked. "She was a pile of flesh! How could a ball of what was practically meat escape?"

"I don't know."

"Useless," The son of the Devil said as he snapped his fingers, and the lesser Devil was smited from existence. "Find out who then probably stole her from us, and if you don't, the rest of you will follow!"

"Yes, sir!"

"If she is actually back… we are all fucked." For while he was stronger than both, Lilith was still his mother, and so…

He did not want to think about that.

Xxx

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