I Write, She Draws, We Fuck - (Eromangasensei + Xover, SI)

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The Izumi Household is a rare occurrence in Japanese society.

Where most young fellows were either under the leadership of parents within a normal house or set off to live in orphanages, there is much to say to the young pair of siblings currently inhabiting the mostly deserted home that once was filled with cheerful talks between parents and children.

The death of both Izumi Kotetsu and Izumi Himari should have hauled the two step-siblings into an orphanage, but the intervention of one Izumi Kyouka, their aunt prevented such circumstance from happening.

So... How do I fit in this already confusing story?

Well, my name is Izumi Masamune, and I am actually an insert... of the eldest sibling to my little sister, Sagiri.

My step-sister was born from another father and our parents married after their first marriages didn't work out.

So, we were getting prepped for a lovely family story... until an accident occurred and we were orphaned.

Auntie Kyouka moved to have us keep the old house, mostly because she could financially do so, and she lived in a tiny enough flat to not be able to keep us around there.

These circumstances for a time were awkward, but when I got my writing skills back to a sharp and refined level around middle school, I was off to write for a living so that we weren't a burden to our aunt.

Being reborn in Japan meant that I had a chance in writing light novels and get cash through these. Differently from the original Masamune, however, I wasn't focusing on quantity but quality.

Sure, I had my little fanfic account set to the side to hone my skills and get my blood pumping when it came to write official works, but I was very meticulous when it came to write compelling effective pieces that the masses could enjoy.

My first serialized work was 'The Silver Wolf's Reincarnation'. While I couldn't know if I had outright plagiarized the OG Masamune's work, I had enough details to work with and create something of a lengthy series out of it.

At this point in time, I had finished Volume 3 and... I didn't kill the main heroine differently from my original counterpart. While there had been a serious thought on doing so due to a narrative opportunity by temporarily remove the heroine and allow other female characters to blossom under my care, I could tell that the fans were too attached to nod at this opportunity.

It was still an option that raised some criticism on barely-expanded side characters, but the plot was going strong and so was the characterization of the main cast.

There was also something else about this work compared to others - it was the first one I had done in conjunction with my sister's drawings.

Sagiri was Eromangasensei. This was not a secret between us, and it was hardly weird for me to ear my little step-sis tinkering with her drawing tools to get some smutty commissions to stash up money on the side.

To say that Sagiri and I were closer compared the OG Duo would be an understatement. In fact...

"Really, Giri-chan?"

This morning showed a rather common awkward aspect of our relationship, with the girl having slipped into my futon and happily bobbing her head while sucking me off.

"Why not? You like that, Onii~."

The soft and velvety tone was perfect for her tiny but eager tongue.

To kick the allegations head on: I did not do anything to warrant this.

In fact, the fault lies mostly to my step-mother.

In canon, Himari had been the one showing her lil' daughter about porn so, when I kept behaving nicely and more warmly around Sagiri after our dad and mom's deaths, this translated in her crushing hard on me, falling in love and employing her loli skills to get into my pants.

Not even a few years after our parents' passing and we were fucking like bunnies in heat.

Condoms were a common 'secret' item that was acquired at the local shop.

The guy behind the counter didn't seem to care much since he was aware that it was just 'modern kids being modern kids' (which was a very jarring discovery to make but...).

So, after the early morning BJ, Sagiri and I would go through breakfast, clean up and go to our respective schools.

Sagiri was unable to make many friends since her drawing hobby was quite a hot topic to bring up to anyone's attention. Hell, her own limited group of buddies hardly knew she actually drew for fun and work.

While I was quite the average kid in school. I was seen as a good writer there as there wasn't much smut involved in my pieces, but there were, of course, people that loved to fuck over me because I was a nerd.

Nothing too shabby, only classic Japanese bullies being a thing even in this time and age.

The only friend I really trusted was one Takasago Tomoe and... we were just that, friends. I want to say there was a budding love in the making, but Tomoe's real love was for BL.

So, that was a no for me. I respected all sort of stuff, but Yaoi was not something I wanted to see overwhelm me in waves - because yes, Tomoe had the hugest shameless collection of those pieces.

And while I respected her kinks, I didn't want her in my home. Hell, I didn't want Sagiri to get corrupted by that shit either.

Still, this was supposed to be quite the average new life for me. I had set myself up to be capable of handling what little hurdle was between me and Sagiri, and our end goal for a happy fruitful life.

I made sure Sagiri went to school, that she was doing well there, that she could handle talking with her peers and...

Today was different.

As I finished picking up Sagiri and we returned home from school, we were surprised to find someone waiting to our doorstep.

Shorter than Sagiri, the little girl looked absolutely chill despite being alone in that place for god knows how long.

Why does she look familiar?

"H-Hello?"

She tilted her head to the side. "H-Hello. A-Are you Izumi Masamune-niisan? And are- are you Izumi Sagiri-neesan?"

Sagiri and I shared a look before I nodded.

"Yes? And you are?"

I tried to get a name as this voice was also familiar, but it took the girl to tell us to get where I first heard and saw her.

She bowed. "Shirosaki, Hana, n-nice to meet you both!"

...

Common sense had me get Hana-chan inside as I knew this was a character from Wataten. Clearly not Eromangasensei... what's going on?

As I got to seat and talk some more with Hana-chan over a glass of water, she told me that Kyouka-nee told her to come here.

So, I called 'Kyouka-nee' and-

"Yeah, I told my friend, Hana's mom, that you two would babysit Hana-tan while she is busy checking on Hana's grandma since she is sick."

"Oh. And you could have also warned us?"

"Curb the sass, it was a sudden thing for me too. Plus, I trust you two to be able to take care of her for two weeks."

"We can but-"

"Good, then good dinner!"

I flinched at that abrupt interruption and... I turned to see Sagiri give me a pout. "Auntie is a bit of a jerk."

"She is still our boss until I am old enough to take ownership of the house," I mumbled, then I turned to Hana and offered her a warm smile as I could tell she was a bit nervous. "Ne, Hana-tan. Do you want to help Masamune-nii in getting you a nice room?"

The girl nodded softly and even accepted my hand as I got her to the guest room. It was pretty empty beyond the bed. But Hana had a whole lot of things in her school bag beyond her books and notes.

I helped putting those pretty dolls left and right, even lifting her from the ground so she could personally put her favorite 'Higero' doll... which was quite the hideous man-looking thing I have to say.

Still, a good deed wasn't meant to go unpunished.

While Hana had her room, Sagiri had offered the younger girl to share the room with her.

Without hesitation, Hana accepted her 'oneesan's offer and the two retreated in Sagiri's room after dinner.

I was spent for the day and I barely corrected a few things about Volume IV's first half before going to sleep.

I thought that the presence of Hana would have curbed Sagiri's lustful desires but-

I woke up with a tender pair of lips suckling at my cock. And it wasn't Sagiri's as she was flicking her bean beside me as someone else was on the job.

I was flabbergasted and Hana... offered a tiny smile. "D-Do you like it, Niisan?"

At this point, I knew that my hope to quarantine Sagiri's horniness was no more. For the horny Eromangasensei's true plan was now at play: a harem of loli... for her beloved Big Bro!

AN

Had this strange idea roll into an avalance the more I thought about it: Horny well-loved Sagiri means horny loli Sagiri, which means other lolis will be corrupted and taken to serve her beloved Oniisan. Which in turn drags in Girl-Failures, MILFs, and so more.

What a shameless horror awaits the poor guy just trying to make cash with his writing!

...

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