Parameter Supremacy: The Man Who Seizes a Harem Through Sheer Effort. - Chapter 74.

Memories of Summer.

For some reason, he still didn’t want to go home yet.

Maybe he wanted to stretch out the time they had left before summer truly ended.

“Hey… want to go to a hotel?”

There was one thing he had already decided.

If he traced back the entire relationship between him and Shiina, every single step had started because of her. She was the one who first spoke to him, the one who encouraged him to take kendo seriously, the one who invited him on their first date, the one who confessed her feelings, the one who waited for his reply, and even the one who had been there that previous night.

He had done nothing but receive her constant support and gentle pushes on his back. The indecisive part of him had failed to give her anything in return. That previous night, he hadn’t been able to move their relationship forward. And now, she was quietly saddened by the approaching end of summer.

At the very least, for this final memory of summer, he wanted to be the one who took the first step.

“Do you have time?”

Her face flushed bright red as she looked down. She clearly understood exactly what he was suggesting.

“U-Um… yeah. That’s fine with me.”

The bright, energetic smile she had worn just moments ago was gone. In its place was a slightly feverish expression and eyes glistening with moisture.

***

After parting ways with Moe and Matsuri-chan, the two of them returned to the area in front of the station and slipped into a love hotel located just a short distance away. Among the local youth, this particular hotel was somewhat well-known for not checking ages.

Once they stepped inside and turned on the lights, Shiina immediately began curiously inspecting the room.

“Wow~ It’s my first time in one, but it looks pretty normal, huh?”

“Yeah, same here. The bed’s huge though…”

“Right…”

Their eyes naturally drifted to the large bed where the two of them would soon be lying together, and both of their faces turned red.

“S-So, uh… should we take a shower first?”

“Ah, yeah. Good idea. Let’s do that.”

“Want to go first?”

“U-Um, sure.”

Shiina quickly headed toward the bathroom. Ryuuji let out a long breath.

Tonight, he would finally make his move. Since this was what Shiina wanted, he intended to fulfill her wish. More than that, deep down, he genuinely wanted to hold her.

***

When Shiina emerged from the shower, her damp hair swayed gently with a glossy sheen. She had loosely wrapped a bath towel over her underwear. The faint lines of her tan peeked out from beneath the bra straps, standing out sharply against her pale skin. The contrast was strangely seductive.

No… it was outright erotic.

He swallowed hard.

“Ah, I’ll go take a shower too.”

His voice might have cracked a little. A wave of embarrassment over showing such an uncool side mixed with the rising excitement of what was about to happen, creating a strange tension inside him.

He stripped off his clothes and turned the shower lever. Slightly scalding hot water cascaded over him from head to toe. For a brief moment, the sting of his sunburn flared across his entire body, but the sharp sensation helped clear his head just a little.

“Gotta make sure I’m clean, at least.”

He washed his lower body more thoroughly than usual. He wanted to make sure that Shiina’s first time wouldn’t leave behind even the slightest unpleasant memory. Carefully. Meticulously.

After finishing, he brushed his teeth and finally doused himself with cold water from the showerhead. He couldn’t appear before her with his body still flushed with heat. He wanted to look as calm as possible in her eyes—so she could feel even a little more at ease.

***

When he stepped out of the bathroom, Shiina was sitting on the edge of the bed, waiting for him. She looked up at him with slightly upturned eyes. Her cheeks were tinged with a soft pink.

He had already turned off his phone. He had confirmed the location of the condoms and tissues while she was showering earlier. There were no more worries left. All that remained was to move forward.

“Shiina… is this okay?”

He sat down beside her and placed his hands gently on both of her shoulders, asking for final confirmation.

“Yeah. It’s okay.”

At those words, he gently pushed her down onto the bed.

***

He slowly untied her bath towel, revealing her in nothing but her underwear.

She probably hadn’t planned on showing him this side of herself today. The moment her sporty underwear came into view, she dropped her gaze and gave a small, trembling shiver.

He could feel the overwhelming embarrassment radiating from her entire body, and his chest tightened involuntarily.

Even so, she was desperately trying to appear composed. That faint trembling only made her feel all the more endearing.

“Ehehe… If I’d known this was going to happen, I would’ve worn something cuter…”

She turned her face away in embarrassment and laughed shyly.

“That’s not true at all. You look incredibly cute.”

Seeing her lightly tanned skin only made the heat that he had tried to suppress flare up again in his lower body.

This was bad. He was losing control. He needed to do something—anything. Even as that thought crossed his mind, his lips were already pressing against hers without conscious thought.

It was nothing like a gentle kiss. From the very first moment, it was a fierce, devouring kiss, as if he were claiming her mouth. His tongue ravaged every corner of her mouth without restraint.

His mind tried to figure out what his right hand should do, but it moved as if it had a will of its own, sliding up to grope her breast.

Soft… and it feels so good.

That was it. A simple, honest impression. Whether they were large or how sensitive they were didn’t matter. All he could focus on was their incredible softness.

Yet his right hand wasn’t satisfied with just that. He pushed her bra up and kneaded her breast, rolling her nipple with his thumb like a child playing with a game controller.

“Nn…”

A sweet moan slipped out from between their kissing lips.

“…Are you okay?”

The moment he heard that voice, his head instantly cooled. Worry for Shiina surged up inside him.

When he pulled his lips away, his eyes naturally fell on her chest. The sharp contrast between her tanned skin and the soft, pale swell of her breasts caused his thoughts to scatter for a moment.

Noticing his gaze, Shiina quickly looked away, her cheeks flushing deeper.

Her left hand trembled slightly as it slowly moved toward her chest, shyly covering it. The way her fingertips traced the curve of her breast conveyed every bit of her nervousness and embarrassment.

“Hehe… This is so embarrassing. But… it’s okay. Please… don’t stop.”

Smiling softly, she spoke those words. Ryuuji answered with a light, brushing kiss. They continued forward slowly, carefully confirming each other’s feelings with every step.

“Let me see your chest.”

“Uuu… it’s embarrassing…”

“Do you not want me to?”

“Uuu… fine.”

With that, she moved her hand away, fully revealing her breasts.

“So erotic…”

“Mou… you’re embarrassing me… Please, keep going.”

He slowly ran his tongue across her nipple. His left hand gently fondled her right breast, his fingers sinking into its softness.

His right hand quietly slipped inside her panties, fingers gently exploring the soft patch of hair before finally reaching her most secret place. He touched her carefully and began to move slowly.

“Nn… nn.”

Once again, a sensual moan reached his ears. Hearing that voice made him worry no matter what.

“Are you okay?”

“I’m okay. It just feels… a little strange.”

“Does it hurt?”

“No… if anything, it feels more good than painful.”

Hearing those words, he slid his finger fully inside her.

***

“Nn… haa… haa…”

Shiina gazed at him with glazed, melting eyes. She had already shed every last piece of clothing. Her skin, illuminated by the soft lighting, carried a faint rosy tint. The tension from earlier was slowly transforming into heat.

At a distance where he could reach out and touch her, Shiina’s shoulders trembled slightly. Her breathing was shallow, yet there was no sign of retreat—only quiet acceptance as she prepared to receive him.

He faced her just as naked, and every time their body heat drew closer, their skin prickled faintly.

Only the pale traces of her bikini remained white. The rest of her skin was softly tanned by the summer sun. Whenever faint light touched her in the dim room, the white areas glowed gently while the tanned sections cast deeper shadows. The smooth boundary between them was so alluring that his fingers instinctively traced along it.

Just by meeting each other’s eyes, they both clearly understood what was about to happen.

They shared another kiss—how many had it been now?

“Shiina… I’m going to put it in, okay?”

“Yeah.”

He pressed the tip of his condom-covered length against her wet entrance. The heat radiating from her made his hand tremble slightly, but he moved patiently, adjusting little by little as he searched.

A little lower…? Or higher…?

He rocked slowly back and forth, carefully fine-tuning the angle.

On the second pass, her muscles suddenly relaxed, and he slid inside naturally. The moment he felt the soft, warm tightness of her for the first time, his breath nearly caught.

Sensing her body accepting him, he gently entrusted himself to her.

“Ugh…”

Shiina let out a small, pained sound. He immediately stopped moving his hips.

“Hey, are you okay?”

With slightly teary eyes, she looked up at his face.

“It hurts a little… but I’m happy. You can move.”

“Got it.”

As gently as possible. Slowly. It’s okay. Slowly.

“Ryuuji… I love you. Kiss me.”

“I love you too, Shiina.”

They shared the deepest kiss they had ever exchanged.

***

“Haa… haa… haa… nn.”

While catching his breath, he looked at Shiina.

“Is your body okay?”

Afterward, Shiina hid her face behind a pillow.

“I’m so happy I might actually die…”

She peeked out from behind the pillow with flushed cheeks and a dreamy, dazed expression.

“If you die, I’ll be in trouble. I’d be miserable.”

“Ahaha, that’s true… Haa… What should I do? I think I might be the happiest person in the world right now.”

“Haha, you’re exaggerating.”

“I’m not exaggerating, that’s why I’m troubled!”

When she sat up and showed a slight pout, she looked impossibly adorable.

“Your chest is showing, you know.”

“Mou, you’re such a pervert~♡”

She quickly pulled the blanket up to hide herself. A little disappointing.

“What do you want to do? Want to take another shower?”

Shiina tilted her head thoughtfully at his suggestion.

“Yeah… Hey? Want to take one together?”

It was an utterly seductive invitation.

“Is that okay?”

“If I say I want to go in together?”

“That sounds perfect.”

The two of them headed to the shower together.

***

They stood side by side under the shower. Shiina kept glancing down at her lower body.

“Does it hurt?”

“Nn-nn. It doesn’t really hurt. Just a little stingy.”

“You’ve been paying a lot of attention to it, though.”

“Ah… It still feels like something’s inside me. It’s a weird sensation.”

She lightly stroked her lower abdomen as she spoke.

“But toward the end… it felt pretty good.”

Those words brought him a small wave of relief. He had been worried that only he had enjoyed it.

“I’m glad. I felt good the whole time, so I was feeling a bit guilty.”

“I ended up thinking ‘I want to do it again.’ That makes me happy.”

Perhaps because it was after the act, the sense of shame had strangely vanished even though they were both still naked.

“So this is what was inside me~”

Shiina knelt in front of him and poked curiously at his lower body with her finger.

“Hey, stop that.”

Still sensitive, he embarrassingly began to swell again from the stimulation.

“Ah, it got big again.”

Shiina stared at it with genuine interest.

“Hey?”

“…What?”

Overwhelmed by sudden embarrassment, he barely managed a reply.

“Can I try licking it?”

“Eh?”

His mind went completely blank. Without waiting for his answer, Shiina’s tongue gently touched him.

Sorry. I’ll leave the rest to your imagination. For now, I’ll just say one thing: he had been completely and utterly undone by Shiina.

***

“Nn~ Ryuuji, I love you~♡”

With Shiina in full super-clingy sweetheart mode, the two of them left the hotel.

Using the hotel today had been playing with fire. If they were caught, they would be taken in for guidance—it was a proper wrongdoing. They absolutely could not be seen. They left the hotel separately, carefully and cautiously.

There was also the guilt of dragging her into something bad. He honestly wasn’t sure if this had been a necessary step for the two of them. For the first time, he had acted purely on his own desire. Even so, his feelings for Shiina felt like they had grown significantly deeper.

They managed to leave the hotel safely and reunited in front of the station.

“School starts again tomorrow, huh.”

“Yeah. Summer break felt both really long and really short. It’s weird.”

“I had a great time. Dating you, having my first time… This is probably a summer break I’ll never forget.”

“Me too. Same here. And I even got such a happy final memory~♡”

Shiina laughed with a mischievous “Nishishi.” Just seeing that smile was more than enough.

“Take care of me in the second semester too.”

“Yeah. Let’s do lots and lots of lovey-dovey stuff~♡”

And so, the final night of summer came to an end. Tomorrow, the new semester would begin. He was still worried about Moe and Satou Minato.

There were still plenty of concerns. But today, they had created the happiest summer memory. Just that was enough to make him feel like he would have sweet dreams tonight.