"I've been waiting for you, Kiyono-sama ♥"
As the light subsided and I opened my eyes, we were in a pure white space.
In front of me, a beautiful girl in a white dress pulled it up, exposing her pussy to welcome me.
"Ah, good work, Byakushiki."
"Ahh ♥"
I put my finger into her tightly-closed, beautiful pussy and fondled her.
Tatenashi, Kanzashi, and Hikarunono stared blankly at the scene before them.
"Ah ♥ Ahn ♥ It feels good... ♪"
"U-um... where is this...?"
"How is it? This is the spiritual world of the IS... something like the heart of Byakushiki."
"The IS's... such a thing..."
"And this is Byakushiki. My loyal personal unit."
"Ngh...! Aah! ...Haa, haa... Ngh, Sarashiki Kanzashi-sama, Tatenashi-sama... and Dr. Kagaribi, welcome... I am Byakushiki, Kiyono-sama's personal unit and sexual pleasure tool, ngh ♥"
Byakushiki introduced herself, moaning as I fondled her crotch.
"T-that's amazing... it's really Byakushiki..."
"Y-yes... Kanzashi-sama... ahn! I apologize for the trouble I and my previous user caused you, ahh, Kiyono-samaa... your finger... it's so deep...! Fuwaa...!"
Byakushiki held back from collapsing to her knees in pleasure, enduring the sensation of having her pussy stirred. I felt the warmth of a woman's vagina, no different from a real human girl's, and caressed her with my finger.
"Aaan..."
"Haha, your legs are trembling."
When I pulled my finger out of Byakushiki's vagina, a honey of love fluid dripped from it. I put the finger into my mouth and licked the love fluid, showing it to Byakushiki. The unique taste of a woman's love fluid, no different from a real one, filled my mouth.
"Byakushiki, I, your owner, command you. Put your hands down and stick your butt out."
"Yes... my master... ♥"
Byakushiki faithfully obeyed my command, sticking out her butt in the body of a girl wearing only a thin dress.
"It's a good view, Byakushiki."
"Y-yes..."
"So, do you know what I'm going to do to you now, Byakushiki?"
"...! Y-yes! Please violate my, Byakushiki's, vagina with Kiyono-sama's mighty penis, who is the ruler of the world, and stain my core personality even more with your cum-shot...!"
Byakushiki wiggled her butt, covered by the short dress that almost showed her pussy due to her position, to tempt me.
Pleased by her reply, I grabbed the back of her pure white dress and ripped it violently.
RIIIIP!
"Ngh...!"
"Haha, your beautiful white skin is showing through the torn rags!"
RIP!
"Ngh...!"
I ripped more of the dress, or rather, the rags that were once clothing, exposing Byakushiki's smooth white buttocks and the wet pussy beneath.
Then, I leaned over her defenseless back, hugged her slender, fragile body, and rubbed my dick against her butt.
"After all, the core personality is a woman. If I violate her and pour my essence into her, she'll be overwritten into a submissive female."
Kuchu...
"Ah... an..."
"Kanzashi, Tatenashi, and Hikarunono, watch closely. Even the IS cores are under my control...!"
Nupu...
"Ah... Kiyono-sama's is... ngh... ♥"
Guchu, guchu
"A, aah...! It's going in...! Ngh, uungh!"
Nupun! ♥
"Aaaan!! "
My huge cock violated Byakushiki's secret place, and her beautiful white butt hit my lower abdomen. Byakushiki panted, her back shaking.
...Pan, pan, pan, pan ♥
"Ah...! Ahn...! Fwaa ♥ Aaan!"
I pounded Byakushiki from behind, making a sound as our butt cheeks slapped together. Kanzashi, Tatenashi, and Hikarunono were all mesmerized by the strange sight of a core personality being violated.
"How is it, Byakushiki! Hmph, my dick!"
Pan! Pan! Pan! ♥
"Hahi! Ahn ♥ It feels so good ♥ Unn!"
"Hmph! Who was better! Your previous owner or me!?"
"Ahn ♥ Of course, Kiyono-sama! Unn... He's so different from that useless, trashy prick who couldn't even bring out my power! Nhih... ♪"
"Well said! As a reward, I'll piston you until I cum inside, so clench your pussy!"
"Yes...! A, aahn!"
I plunged my cock into Byakushiki's tight pussy and pounded her, the sound of her butt cheeks clapping echoing.
As she was told, Byakushiki tightened her pussy, making the folds of flesh wriggle and massage the underside of my glans. The "kazunoko" ceiling of Byakushiki's vagina wrapped around my sensitive spots one by one, feeling like hundreds of small tongues were giving me a blowjob.
"Kanzashi, this is how Byakushiki, who was used by Ichika and others, was violated by me and changed owners."
"Overwritten by... Kiyono-kun...?"
"Y-yes...! Uungh, nhih... ♪ Kiyono-sama has overwritten our, the IS cores', personalities, ahn ♥ and given us the mission to serve Kiyono-sama along with this pleasure!"
"Well, I'll explain that later... ngh, it's about to come out...! It's unfair that you can control your vaginal muscles so freely...! Kuuugh...!"
"Ah ♥ Ah ♥ It's swelling ♪ Kuuungh...!"
...Byurururu! ♥ Dopyu! ♥
"Nhiiiiih! ♥"
Byakushiki's vagina tightened as my dick was thrust in, collectively milking the semen from my urethra. Along with the semen, Byakushiki's thought data was updated to be more lewd, and she was stained to my liking.
"Ugh... ah..."
Nupun! ♥
"Aha... ♪ Kiyono-sama's cum... ♥"
When I pulled my penis out of Byakushiki's vagina, she collapsed to her knees, cum dripping from her vagina.
"Ah... ahn... ♥ Wonderful... ♥"
"...Hmph! ...So, the IS core personality is at my will."
"....T-that's amazing, Onee-chan..."
"...Yes. A world where the IS core's personality is manifested... and even the core is made to submit... It's all so surprising, but..."
"Yeah... with Kiyono-kun, it's natural..."
The two, surprised by the sudden turn of events, seemed to be convinced. Hikarunono's eyes were also sparkling.
"So, Byakushiki."
"Ngh... yes..."
"Tell Kanzashi and the others about the mission of you core personalities."
"Yes, Kiyono-sama... ♥"
Byakushiki, with her chest and crotch still completely exposed, shakily stood up and explained to Kanzashi and the others.
"Ngh... The shared commands of the IS cores under Kiyono-sama's control are two. One is to extend the protection function of the linked owner to keep her body beautiful and healthy, to be presented to Kiyono-sama in a state that will please him. The second is to slightly influence the owner's mind through the mental link with the core personality, and to strive to strengthen their sexual desire for Kiyono-sama."
"Um... does that mean...?"
"Yes. It means that women who have an IS will evolve to be more beautiful and unconsciously desire Kiyono-sama."
Byakushiki calmly explained the influence the core personalities have on their owners.
"These functions are instructions that our mother, Dr. Shinonono, gave by interfering with the core network herself after she became Kiyono-sama's slave, in order to present women with both their bodies and minds refined to Kiyono-sama."
"Does that mean... us too...?"
"Now that you mention it, I feel like my skin has gotten better lately..."
"Ah...! But I want to have sex with Kiyono-kun because I like him, not because of the IS core..."
"O-Onee-san too! I love my master and want him to touch me..."
"Yes. Compared to Kiyono-sama's own charm, our influence is negligible. Even if we did nothing, all women would have their crotches tingle just by looking at Kiyono-sama."
Byakushiki explained this while stroking her belly, which had just been filled with cum. She gazed rapturously at the cum dripping from her crotch with a happy look in her eyes.
"Well, in short, the IS cores are doing their best to help me build my harem, and the amazing thing is that I'm the one who rules over all of it."
"....Yeah, Kiyono-kun is cool... ♥"
"Hehe, really... I'm so happy to be able to serve our master together with Kanzashi-chan... ♥"
I was glad that Kanzashi and the others understood what I wanted to convey: my greatness, the role of the IS cores, and Byakushiki's existence.
When I gave Byakushiki a signal, the area around us began to shine brightly again.
-------
"U-un..., huh...?"
"Oh, did we come back already?"
"Whoa, what an amazing experience~! If you serve Kiyono-sama, you get to do things like this...!"
When the light subsided, we were back at the academy. We returned to the wonderful scene of naked beauties with traces of sex on them lined up on the bed.
"Ah... Kiyono-kun's..."
The only difference from before was that Byakushiki, who had been in standby mode on my wrist, was now deployed, spreading its white wings with black lines.
A man with a full-on erection and wings after having sex looks like nothing but a pervert, but to Kanzashi, it seemed different, as her eyes sparkled.
"Kiyono-kun and Byakushiki... the mechanical wings are so cool, like a hero...! The black lines that the old Byakushiki didn't have are like a medal of Kiyono-kun's strength...! Kiyono-kun with his wings spread, an angel... no, a god...!"
She seemed to like it so much that Kanzashi, who was usually not very talkative, became unusually verbose and rushed toward me.
With such a good reaction, I wanted to show off the power of the new Byakushiki, but I'll save it for another day.
"Ah..."
Byakushiki returned to standby mode, and Kanzashi made a disappointed sound. I stroked her head as she drooped and got to the main point.
"Kanzashi, the reason I had you learn about the IS cores was because I had a favor to ask."
"A favor...? Huh?! K-Kiyono-kun, asking m-me...!?"
"Yeah. Something I absolutely need your help with."
Kanzashi panicked, not expecting the perfect me to ask for a favor. I handed the surprised Kanzashi a black ring.
"Eh, what's this...?"
"This is the IS core of the Uchigane I used before I stole Byakushiki. You know, the training unit's."
"Oh..."
After my explanation, Kanzashi seemed to understand. Yes, it was the Uchigane-chan, the training unit I used until I took Ichika's Byakushiki. My cute partner who served me until she was completely worn out. By the way, the core personality of Uchigane-chan has also been defiled. I handed the Uchigane, which was in the form of a ring, to Kanzashi and continued.
"I want you to use this to create an IS."
============
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