.

Serena’s expressionless face was precious.

This was because whenever she was by my side, she was always smiling gently.

Of course, if she was happy just by being with me, that was delightful. However, there were times when I longed to see Serena’s emotionless expression.

On the first day that the world turned into a zombie apocalypse, I tore open the delivered package and encountered her for the first time.

I was uncontrollably aroused by that inorganic gaze, which seemed somewhat off-focus.

It was not that I disliked the current Serena.

Her ever-bright, positive, and innocent personality was undoubtedly the vitality of my life.

But still…

“Hmm…”

I looked down at the face of the sleeping Serena.

Although she didn’t possess the inorganic look she had as a doll, her face was different from usual—it was expressionless.

When I recalled her usual sunny expression, this face felt oddly out of place.

Come to think of it, I hadn’t really seen Serena sleep much.

Serena and Ciel usually woke up earlier than me every morning.

Being intoxicated, I gently caressed Serena’s face, who was deeply asleep.

As I saw her with my enhanced vision since becoming a superhuman, her skin was as flawless as a baby’s, with not even a pore visible.

It was a skin texture incomparably soft to artificial silicon, and even light pinches would leave light red marks.

My mouth continuously produced saliva.

My thumb, which explored Serena’s mouth, became wet from the intrusion.

She was clearly alive.

However, she didn’t respond to the stimuli I was providing.

She was literally in a state no different from a lifelike real doll that possessed a beating heart.

It was a golden opportunity to enjoy that state.

I decided to make a move while she slept.

As I lifted Serena’s white T-shirt, a white bra matching her panties appeared.

I unhooked it and threw it under the bed.

Her voluptuous G-cup breasts appeared before my eyes, and her soft pink nipples rested undisturbed in their relaxed state.

This was a sight I rarely got to see.

Since Serena would become erect just by holding hands with me, her nipples were always rigid before me.

Wanting to enjoy the soft nipples with my eyes a bit more, I refrained from touching her breasts and removed her panties instead.

Her cute vagina, tightly closed, only showed the color of the outer flesh.

Having not been a human for very long after her transformation from a Real Doll, she naturally had no pigmentation, and now, with no lubrication being produced, it was in a fluffy state.

Come to think of it, I couldn’t recall the last time I saw Serena’s fluffy vagina.

Or maybe… this might be the first? I always saw her when she was excessively wet.

I held Serena’s plump labia and spread it to both sides.

The flesh-colored curtain opened, revealing the shy pinkish entrance that matched her nipples.

The entrance, usually bustling with juices, looked incredibly small, and right above it, the modest clitoris was almost hidden because it hadn’t hardened.

Cute.

Though always exposed, it really was a cute vagina.

With a heart full of love, I licked all over Serena’s vagina.

Even unconscious, I could feel her entrance twitching reflexively.

I applied more saliva meticulously near the entrance to ensure smooth penetration.

After all, a dry sensation during insertion could wake Serena up.

“Sigh…”

After licking her thoroughly, I once again observed Serena from top to bottom.

Her sleeping face remained expressionless. There was no flush to her complexion. It was just normal.

Her nipples were still soft to this degree of stimulation since I hadn’t directly touched them yet.

Only her nether regions were coated in a sticky state from the saliva I provided.

Since I saw Serena’s expressionless face earlier, my arousal had already reached its limit. Holding back any longer was difficult.

I grasped myself and slid between Serena’s folds.

My penis tip gently greeted the labia as if the two sides kissed.

I aligned it with her entrance, nudging and advancing little by little.

It was tight. And dry. But not to the point where I couldn’t enter.

Considering that Serena’s privates were usually flooded with arousal every time I penetrated her, realizing how dry she was now made me even more eager.

Squish-

I forced my way in, prying her entrance open.

My thick arousal, prominently veined, buried itself halfway into Serena’s flesh.

The sight was always mesmerizing, almost magical.

To prevent injuring her dry insides, Serena’s insides began producing some moisture.

I, surprised by this sudden wetness, moved as gently as I could manage at the moment.

Starting with small back-and-forth motions of about 1cm, as her insides gradually relaxed, I penetrated deeper and deeper until I was fully inside.

“……”

Fully inside her.

In Serena’s drowsy vagina, and with her, who wasn’t even that aroused, to the point where her nipples were still soft, I was buried to the hilt.

Just that fact alone sent tingles down my spine and gave me the sensation of overflowing arousal.

But it was still too early to get too carried away.

The goal was to fill her up with my semen before Serena woke up.

Serena would likely be confused but delighted, just as if Santa had come and left a gift while she was asleep.

But she shouldn’t wake up before I finish.

I wanted to climax pleasurably while licking that expressionless face.

While moving my hips, I suddenly wondered if this lust might be somewhat distorted.

…So what?

If I had been a normal human to begin with, I wouldn’t have acquired such a grotesque ability.

Serena would happily partake in such a unique play, so there was no problem.

Squelch- Squelch-

I moved back and forth slowly, ensuring Serena wouldn’t wake up.

It seemed that she was still sensing pleasure even in her sleep since more and more fluid was being produced. Serena’s vagina felt like a well-cooked stew that had been simmering for a long time.

The pleasant squeeze on my arousal with each thrust, that tightening sensation.

The dormant clitoris seemed to be slowly awakening, stretching itself.

I didn’t stop my hip movements and shifted my gaze upwards.

Squelch- Squelch- Squelch-

Her soft breasts jiggled in response to my thrusts.

Even in the darkness, her light pink nipples caught my eyes, yet they weren’t completely hard.

It seemed nipples wouldn’t become fully erect with just the sensation of sex alone, without direct stimulation.

Squelch- Squelch- Squelch- Squelch-

Serena’s body trembled like a doll with its strings cut off.

With her expressionless face, Serena’s head slightly nodded in response to the rhythm of my thrusts.

I grabbed a handful of her lovely platinum hair and brought it to my nose.

“Hmm……”

Mixed with the scent of our shared shampoo was Serena’s distinct, fresh body odor. Inhaling it, I felt a surge of pleasure rising from deep within.

Squelch- Squelch- Squelch- Squelch- Squelch-

Although slower than usual, it was the fastest speed I dared to go without waking her up.

I thrust deep into Serena with an increased pace.

Holding back the sensation that reached the tip, I bent over to look at Serena’s face.

“Se…renaa…”

Coincidentally or not, Serena moaned softly, seeking me in sync with my climax.

Usually, her face to her neck would be flushed with heat when I climaxed, but now she was just the epitome of calm expressionlessness.

I licked Serena’s lips from the outside and pressed against her hips, beginning to climax.

Buzzing- Buzzing- Buzzing-

I felt Serena’s breathing through her nose during my climax.

It was a long and quiet breath, characteristic of someone deep in sleep.

Hearing that breath, I strangely felt relaxed and let my body slack, releasing weakly inside.

Pshh- Pshh-

Perhaps it was because Serena’s vagina had been accustomed to me for a long time, but even asleep, she reached her peak.

I realized this due to the sensation of her tightening around me and the wetness soaking my pubic hair.

‘You must’ve felt good too, Serena. I’m relieved.’

I licked her cheek from bottom to top.

And then… I locked eyes with golden irises that were silently watching me from right beside me.

“……”

It was Ciel.

Ciel had woken up.

She silently observed me licking Serena’s face.

I whispered softly,

“……Ciel?”

“Yes, Master.”

Ciel calmly responded, as if this moment was just afternoon tea time.

“When did you wake up?”

“About 5 minutes ago. I didn’t want to disturb Master’s pleasurable time, so I kept quiet.”

“…Thank you. I want to make love to Serena a bit more while she’s asleep. Would you mind sleeping a bit longer?”

“Understood.”

“I haven’t been able to satisfy Serena recently… I hope you don’t feel too left out.”

Ciel blinked her golden eyes and replied in an amazed tone as if she’d come up with an idea I hadn’t thought of.

“I don’t feel left out at all, Master. If it makes my sister happy when she wakes up, it makes me happy too.”

“…”

They really were close sisters.

Moreover, Ciel even made a new proposal to me.

“If you enjoy making love while she’s asleep, should we take sleeping pills every day in the future? After waking up and healing with the divine light, there won’t be any side effects.”

“…Shall we talk about that later?”

“Understood. Have a pleasant time.”

Ciel closed her eyes briefly, then opened them again and said,

“Master, you can use my body whenever you want.”

“…Yeah, thank you.”

“On the contrary, thank you for always giving me pleasure.”

“…”

Afterward, Ciel started to breathe evenly, as if she had fallen asleep right away.

Doubting if Ciel had really fallen asleep, I gently touched her chest.

Ciel’s breasts were as pale and white as fine rice cakes.

I lightly grazed her nipples and fondled them for a while in delight…

“…”

There was no response.

Well, even if she were awake, Ciel would want me to enjoy myself without any reservations.

I turned my head to look at Serena’s face.

She seemed to be deeply asleep with a peaceful expression.

She looked as if she couldn’t even fathom that I’d taken my own pleasure from her while she was asleep.

After that, I continued, climaxing around 5 more times with Serena.

By the time I climaxed the fifth time, the base of my penis was covered with a circular ring made of fluid bubbles, the bed sheet was soaked from the fluids Serena released in her sleep, and her womb was so full that her lower abdomen began to swell.

“Uh… Uhm…? Uh… ♡ Ma… Master…?”

Serena, blinking with a dazed expression, lifted her head.

When her sleepy green eyes focused on me.

Slip♡ Slip♡ Slip♡ Slip♡ Slip♡ Slip♡

“This, ah♡, how, ah♡, huh♡, uh♡, ohh♡”

Now, without any hesitation, I put in all my energy, climaxing for the sixth time.

“Ah…!”

Brrzzzzzzz.

It was an incredible climax that made my spine tingle, my body hair stand on end, and my vision go white.

Even in her confusion, Serena tightly embraced me, who was releasing inside her.

“Uhm… Master…♡”

Twitch- Twitch-

“Ah…♡!”

I released every last drop from within me into her.

After that, I felt drained and collapsed into Serena’s embrace.

Truly, it was an endless night of the most incredible climaxes…

As I drifted into a drowsy sleep, I heard Serena whispering in my ear.

“Waking up in the morning feeling full of your essence is the best feeling… I love you, Master…♡”

Feeling the touch of Serena’s now completely hardened nipple pressing against my chest, I fell asleep.