Another 10 days rolled by in the blink of an eye.

I was leaning forward on the sofa, the sound of grunts and moans mingling with the noise of flesh smacking against flesh, flooding the living room. One of Kokujin's big hands was squeezing my breast hard while the other one was wrapped around my waist, holding me firmly in place as he fucked me ferociously, his huge cock filling my cunt and reaching deep inside. We were both gasping and our faces were completely red.

We've already been having sex for almost two hours.

"You love being rammed, don't you, bitch?" He whispered in my ear. This man was always like that, he took joy in talking dirty to all of us, relishing in the sense of control that kicked in. I gave a low moan in response to his crude words, which seemed to turn him on even more as the rhythm of his hips increased. I could feel his cock pulsing inside me, a clear indication that he was about to come.

This came true a minute later, when his grip on my waist tightened and hot, thick cum directly hit my womb, filling me to the brim. Normally, I'd be screaming until my lungs lost oxygen, but the only thing coming out of my mouth were short grunts.

When Kokujin finally pulled his cock out, he sat down next to me on the sofa, fatigue evident on his face. The viscous liquid then began to ooze out of me, dripping onto different parts of the sofa.

Shit, I'm going to have to clean it up really well afterwards, I can't let the sofa be permanently stained, my parents would notice that easily, not to mention that it would be a pain to have to come up with an excuse to explain what caused the stains. Saying that I spilled ice cream would certainly not be believable given the large area the cum fell on.

"Hell yeah, no matter how many times we screw, I can't get enough of that tight pussy of yours Nao. You're easily the best woman among the sluts I fuck." Kokujin said with a sideways smile, opening a bottle of water and taking a long sip to hydrate himslef.

''I'm glad my body pleases you so much~'' I replied with a smile and a cheerful tone. He then stood up, recollecting his clothes that were scattered all over the floor and wearing them again.

''Well, the sex was great as always. I'm going to Kaede's place. I promised her and Kanoko that I'd give them a good treat when they got back from shopping. Tomorrow I'll come by and fuck you again after your parents leave for work.'' Saying so after he had finished putting on his shirt, Kokujin casually walked out of the front door, closing it with a slam.

As soon as he left, the smile faded from my face, replaced by an expression of sheer frustration.

"Once again it wasn't enough...'' I muttered quietly with a touch of anger laced in my voice.

During those last sex sessions with Kokujin, I felt that a change had come over me. And I don't mean that in a positive way.

Every time we had intercourse, no matter how many hours went by, I always felt unsatisfied, as if something was lacking.

Initially, I didn't give it much thought since it only happened once or twice, so I blamed it on tiredness and stress, but the frequency with which this phenomenon began to happen unfortunately increased. It's not as if overnight Kokujin had unlearned how to fuck. On the contrary, he still had as much stamina as the first day he claimed me and his cock always filled my pussy completely, leaving nothing of its interior untouched. At first I wasn't sure how to define it, but it didn't take long for me to realize one simple fact:

Sex with Kokujin was gradually becoming dull.

The thrill that had existed before was waning, and that was bothering me a lot.

I had ditched a weak boy and conquered what I wanted the most, a strong man with an impeccable physique and a big cock.

So why do I feel this way now?

It wasn't supposed to be like this!

I was so angry that I ended up punching one of the cushions on the sofa, knocking it to the floor. The lack of a decent orgasm over the last few days was driving me crazy. I wanted so much to feel the same sense of pleasure from having sex with Kokujin that I used to, but it was becoming more and more like a pipe dream.

I guess I'll have to indulge in masturbation once again.

Taking advantage of the cushion lying on the floor, I sat down on it to make myself more comfortable and rested my back on the sofa. I closed my eyes, not envisioning anything for the time being. It's always better to let a fantasy come to mind naturally than to try to pre-form one.

Fondling my breasts, my breathing became a bit heavier and I could feel my nipples stiffening. I reached for one of them, gently caressing it while letting my other hand wander around my belly, my fingers gliding across the smooth skin.

Gradually, an image formed in my mind. Kokujin was holding both my arms as he thrust into me from behind. However, there was something else, or rather, someone else.

My crotch became soaked as the version of me from my fantasy stared into the blue eyes of a blond boy.

He was underneath me, chained to a bed, completely devoid of his clothes. His misty eyes stared at me in a dazed state.

''Aaaaah, Hiroki...Hiroki! That erection of yours is so adorable! Look closely at where Kokujin and I are connected!'' - I said between moans. At that moment, the Kokujin from my fantasy pulled me forward on the bed, leaving my pussy just a few centimeters from my cute, useless boyfriend's face. I could see his eyes go wide and his thin mouth tremble.

I bit on my own lips and tugged hard on my nipple as I imagined my juices dripping down his face. Kokujin of my fantasy then put me on all fours again, thrusting deeper and deeper inside me. As I got a closer look at Hiroki's lips, I couldn't help myself and connected my mouth to his, kissing him with fervor. The very moment I parted my lips and could see Hiroki's face, a mixture of astonishment and bliss, with our blended saliva dripping from the corner of his mouth, was when the limit was crossed.

I opened my eyes widely, feeling how my body squirmed.

"Ah, Ah, y-yes! Aaaaaaaaaaah~" - I whimpered out loud. Stars danced in my vision as I finally reached the deep throes of the orgasm I'd been craving. Spasms ran through my muscles incessantly, making me think that they would remain in this state forever.

The twinkling stars that had previously taken over my vision were replaced by white dots, which slowly melted away along with the wave of blissful sensations that assaulted my entire body mercilessly.

'Huff...huff...huff..." - My labored breathing floated around the room, my breasts rising and falling in an unbridled rhythm. I put a hand over my heart in an attempt to calm myself down, which seemed to work.

As my heated body began to cool down, my eyes watered in frustration.

Crap, it really seems that now I can only get pleasure from my fantasies where Hiroki is present.

Him disappearing shouldn't have mattered to me at all. He was a weak boy, which made his existence worthless.

The law of the strongest has always governed our world since the beginning of time, applying not just for animals and insects but to us humans as well. The strong take everything for themselves while the weak can do nothing but obey.

Kokujin was the alpha who got everything he wanted.

Hiroki was the maggot who had to submit to the commands of those with more strength.

I've always valued and prioritized that thought.

So why is it that only images and fantasies about a useless man like Hiroki, which are also intangible, have a much greater impact on me than the physical relationships I have with what should be a real man?

Why is the emptiness I feel only filled, even if a little, by visualizing Hiroki at my command, pained by the sight of me naked and being taken by another man as he can't help but feel humillianting excitement and desire?

Why do I yearn so much to see those damn blue eyes completely broken, holding only adoration for me and no one else?

Goddamn it, I'm getting too confused. Everything is messy, be it my head or my heart.

Feeling the cold air against my damp skin, I brought a hand up to my face and covered my eyes with it.

''Fuck Hiroki, hurry back to me. I can't even understand myself anymore. There's only one thing I'm sure of... I need you.'' - My voice came out hoarse de from my throat.

Clearly, there was no response to the words I've just uttered, the large, empty house being my sole listener.

xxxxx

Author's note: Well, I finished it earlier than expected, so here it is.

Nao clearly doesn't understand her own self anymore, that's only going to get worse.