Let's Give It a Shot

The research facility was quite far away.

The entire ride in my father’s car, I was tense. My shoulders felt stiff, and my stomach was twisted in knots.

Yuzuki didn’t say a word. She wore her usual blank expression, but the way her leg kept bouncing told me she was definitely in a bad mood.

The outer walls of the facility we finally reached were covered in dusty concrete instead of a sleek coating.

A scanner the size of an eyeball rotated beside the entrance, and the faint smell of disinfectant leaked through the cracks in the door.

It felt both alien and strangely familiar. Probably because of Yuto’s memories.

I took a deep breath for no particular reason. My heart was pounding, and a cold sweat had soaked into my back.

Beside me, Yuzuki tapped the floor with the tip of her shoe before muttering bluntly.

Her tone was as curt as ever. She stood ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠with her arms crossed, lips pursed in a pout, her eyes skimming through the air without landing on me.

In other words, she was openly saying she hated it.

I felt a pang of guilt, but at the same time, a strange thrill rose inside me.

Because I was about to begin Coupling with an incredibly beautiful girl—even if she was my little sister.

"Both of you, change into your suits here and then come to the lab."

We were led to a small room at the end of the corridor that looked like a locker room.

Inside, it was smaller than I expected. One changing stall, one cabinet, and only two pilot suits hanging on the rack.

Yuzuki shoved me aside as I tried to enter first and slammed the door shut.

The door slammed shut with a bang, and I heard the sound of a zipper being pulled down.

A brief silence followed.

Then came the faint rustle of the suit’s material sliding against skin, the sound of her inhaling, and the familiar little habit of Yuzuki tapping the floor with her heels.

I stood silently in front of the door.

This definitely wasn’t eavesdropping.

I was just… standing there. That’s all.

A few minutes later, the door opened again. Yuzuki stepped out wearing the pilot suit.

Maybe it was because the suit clung to her body like latex.

From her hips to her chest, every curve was shamelessly exposed.

Even she seemed embarrassed to show a man this version of herself; she avoided my gaze, cheeks flushed red.

Women really do look good no matter what. Even if she had zero manners, her beauty made it impossible to get angry.

No, the real problem was that it turned me on. The suit wasn’t even meant to be sexy, yet it looked incredibly lewd.

I nodded absentmindedly and stepped into the changing room.

The suit I pulled out was cold. The moment I touched it, I felt a texture somewhere between metallic and latex. Putting it on wasn’t easy either.

I slowly slid my legs in first, then pulled the upper half up over my shoulders.

When I zipped it up, my body heat condensed inside the suit and I immediately felt sweat forming.

No wonder the girls came out drenched in sweat after every battle. Wearing the suit myself made it instantly clear.

When I stepped out in the suit, Yuzuki gave me a quick once-over. She didn’t say anything, but a strange tension lingered in her eyes.

We headed to the testing chamber together. There, my father was waiting beside what was clearly a test model Dracore.

"If you two are ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠ready, let’s begin the neural synchronization measurement right away."

I nodded. Yuzuki let out a small sigh and turned her head away. Her emotions were complicated, but this was unavoidable.

A large cylindrical device stood vertically before us. Inside the translucent capsule were two pilot seats.

The top was covered by a smooth hemispherical dome, while the bottom writhed with various instruments and organic-looking cable connectors that moved like living tissue.

The front seat was a prone-style chair designed for the pilot to lean forward. It lowered the waist, locked the knees in place, and left the back fully exposed.

The rear seat was for the Top. It had armrests for elbow support and a guide system that let the hands reach forward and lock into position.

In short, it was perfectly optimized for the person in the back to grip and shake the person in front.

…Am I really going to pilot this thing?

It still felt like I was dreaming.

While I swallowed hard and steeled myself, Yuzuki climbed into the cockpit first.

With an expressionless face and without a word, she let out a small breath, knelt in the front seat, and leaned forward.

Soon, control sticks descended from inside the machine and connected to sockets on the back of Yuzuki’s pilot suit.

Precisely, they aligned with a dual curved connector running from both sides of her spine, below the shoulder blades, all the way down to her waist.

And now, I was supposed to take hold of those two control sticks.

Apparently tired of wasting time, Yuzuki glared at me with sharp eyes.

Yet instead of feeling offended, my heart only raced faster.

I knew she was used to that position, but seeing her bent over in the cockpit with the control ports exposed on her back… it was far too stimulating. It looked exactly like she was begging to be taken from behind.

On top of that, her twin-tail hairstyle—which wasn’t common for girls her age—suited her so perfectly that all kinds of desires suddenly surged through me.

For example, the urge to grab those twin tails hard, yank them, and thrust into her.

The dizzying image made me squeeze my eyes shut for a moment.

Hold it together. She’s still your little sister.

No matter that I had only met her today, I couldn’t turn into an animal.

I nodded to myself and carefully sat down behind Yuzuki.

My knees wrapped around both sides of her waist for a stable position, and my hands moved toward her back.

Soon, both of Yuzuki’s control sticks were firmly in my grasp.

The moment they were, I felt a surge of heat and pulsing rhythm. It was as if her heartbeat had been transplanted directly into my fingertips.

…What the hell is this?

It was a sensation I couldn’t even begin to describe.

The instant my hands touched the controls, a vivid feeling—like warm blood flowing backward through the machine—raced up my fingers.

This wasn’t just holding equipment.

Someone’s body heat, rhythm, and even their senses were pouring into me all at once.

It was too unfamiliar. Too clear.

Startled, I reflexively gave the sticks a light tug. Yuzuki’s back twitched violently in response.

Her voice sounded like she was holding her breath, yet it carried a strange, heated undertone.

Still, I understood now. The moment I gripped the controls, our senses had become linked.

While I was still savoring that overwhelming sensation, almost moved by it, my mouth slightly agape—

I slowly tightened my grip on both sticks in response to the machine’s voice.

Then her breathing, her heartbeat, her tension—all of it flowed straight into my palms.

I ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠focused my mind on that sensation.

Maybe because the numbers had jumped so quickly. The recoil made Yuzuki curl her back even deeper.

Her breathing grew longer, and the sound of it brushing my ear changed—short, hot, and constantly breaking.

As those breaths spread across my ear, the inside of the cockpit felt like it was filled with Yuzuki’s scent.

It wasn’t just heat or moisture.

It was a sensation too subtle to even call a fragrance. It felt like her very breath was seeping into my senses—an eerie, intimate touch.

Yuzuki’s voice was full of confusion. For some reason, seeing her flustered only made me enjoy it more.

Maybe we were more compatible than I thought?

By then the machine was trembling, shaking our entire bodies. The vibration traveled up through the frame.

The control sticks twitched. Sweat coated my palms. Yuzuki’s back flinched once. Tiny gasps kept slipping from between her lips.

Short, suppressed sounds—like she was desperately trying to hold her emotions in check.

But her body was honest. The area beneath her shoulder blades trembled. Her hips twisted ever so slightly. The control sticks in my hands relayed every reaction perfectly.

We were almost there. My heart and hers were beating in perfect sync.

Every sensation overlapped, connected, ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠and melted together.

The confused, embarrassed emotions she was feeling right now poured into me without filter.

What was this feeling…?

For a moment I even had the illusion that I held all of Yuzuki in my hands and could shake her however I wanted.

With a sound close to a moan, Yuzuki’s body suddenly went limp and collapsed. At the same moment, the tension that had been flowing through my fingertips snapped completely.

The control sticks were still warm, but they no longer responded. The heartbeat, the trembling breaths, the delicate waves that had coursed through her entire body—all of it had frozen in an instant.

Because Yuzuki had collapsed, the inside of the machine was flooded with red warning lights.

I looked down at her. When I gave her a light tap, her back only twitched faintly. It looked like the final residual reaction of a nervous system pushed to its absolute limit.

***

When the measurement finally ended, a heavy silence filled the lab.

With a soft hiss, the capsule door opened and only thin, slow breathing leaked out from the gap.

The red lights that had filled the room began turning off one by one. The automatically released locking mechanism gently pushed the pilot seat forward.

The first thing I saw was my father’s face.

Eyes wide with shock. An expression of disbelief. And footsteps approaching with extreme caution.

Even though we were stumbling out like injured patients, my father’s face was filled with both astonishment and pure joy as he muttered to himself.

"Is Yuzuki okay?"

"There’s no need to worry about that. She probably just lost consciousness for a moment because of the unusually high synchronization rate—her first time experiencing it."

I looked at Yuzuki.

She still hadn’t fully regained her senses. Her eyes were half-closed, her lips hung slack, and her breathing was shallow and slow.

Sweat trickled down from the damp strands of hair at the nape of her neck, slowly sliding between her collarbones.

Every time her body leaned against mine, I could feel the soft, elastic pressure of her chest through the suit.

Then her warm breath brushed against the underside of my neck, and the lingering heat trapped inside her suit quietly transferred to me.

This sensation was so intensely arousing that I knew I would never be able to forget it.

She really… is my little sister, but damn, she’s beautiful.

I called her name softly while looking at her face, but there was no answer.

She simply leaned against me, legs completely weak, entrusting her whole body to me.

At that moment, my father—who had finally snapped out of his daze—walked closer and stared at us.

Deep wrinkles creased his forehead, and his lips were pressed into a firm line.

It sounded like he was talking to himself, but the words were clearly meant for me.

And then came the sudden proposal.

Feeling Yuzuki’s body heat against me, I mulled over his words.

She was still slumped against my chest, breathing unsteadily, her consciousness not yet fully returned.

What could I even call this sight?

There was nothing to say except that it was too erotic.

Seeing a girl who had reached climax and still couldn’t regain her senses made my heart pound wildly.

Maybe that was why. Naturally, I couldn’t think of a single reason to refuse. In fact, I wanted it even more.

After holding Yuzuki’s control sticks today, I was certain. I might actually have a real talent for this.

So I answered with full confidence.