Even Today, the Genius High School Programmer Cashes In on Day Trades, Completely Flustered by Beautiful Girls' Growing Affection. - Chapter 17: Pool Time, GO!

Pool Time, GO!

That Sunday morning at nine o’clock sharp, we gathered in front of the station nearest the school.

We’d coordinated everyone’s schedules and decided that going on the very first day—early—was best to beat the crowds.

The presence of the top-three beauties was overwhelming, even at a quiet weekend station with hardly anyone around.

Ryuusenji wore a green-checkered blouse paired with capri pants.

Yamano sported an American-comics character T-shirt and hot pants.

Sakuraba chose a soft pink knee-length one-piece dress, her hair pulled back into a neat ponytail.

In the sparse morning light, they stood out like they belonged on a magazine cover.

On closer inspection, Sakuraba had applied light makeup—enough that if someone said “We’re about to start shooting,” it wouldn’t have felt out of place.

As for me? Plain design T-shirt, distressed jeans—the absolute bare minimum effort.

The only concession to the weekend was my hair: bangs swept up and set with wax.

“Ooyama-kun, you’ve got your hair up today… It looks… really cool…”

Maybe because of the lingering summer heat, Sakuraba’s cheeks were faintly flushed.

“Thanks, I guess.”

I brushed it off with the usual polite deflection.

“Way to kill the mood, Kousuke.”

Meanwhile, Shingo—who was dressed in the most ordinary crew-neck tee and chinos—somehow managed to radiate extra refreshment just by existing. How does that even work?

“But man, it’s seriously hot already～”

“That’s why we’re going to the pool!”

Ryuusenji and Yamano were practically bouncing with excitement.

***

Forty-five minutes on the train, then a ten-minute walk.

In the middle of flat, empty countryside, Water Paradise appeared out of nowhere like some kind of mirage.

“…It’s huge.”

That was all I could manage at first.

Apparently the total grounds were about the size of the Tokyo Dome.

The building itself resembled an oversized suburban mall stretched upward, its upper levels walled in glass.

With natural light pouring in and air-conditioning keeping things cool, it probably stayed comfortable even in winter.

We handed over the tickets at reception and split off to the changing rooms.

Shingo and I changed quickly and stationed ourselves at the exit from the women’s side.

If we didn’t, a line of pickup artists would form in seconds.

I’d expected it would take a while, but women’s changing really does drag on.

After a solid thirty minutes, the three of them finally emerged.

And the impact—the sheer destructive power—was on a completely different level from their casual outfits at the station that morning.

Ryuusenji wore a navy-blue bikini.

The top was modest at the bust, but her slim waist, long legs, and gentle slope from shoulders to collarbone gave off a quietly mature, almost adult allure.

The soft big-sister aura was still fully intact.

Yamano had chosen a white one-piece swimsuit—the kind with massive cutouts at the sides and back, connected by only about ten centimeters of fabric on either side of her navel.

And atop that frame sat her signature, violently generous chest.

Her petite stature and baby face only amplified the sense of taboo.

It was indecent. Straight-up erotic.

And then, peeking out shyly from behind the two of them—Sakuraba.

This… this was unfair.

Her bikini was white with delicate floral accents—perfect for her pure, porcelain image.

But that wasn’t the noteworthy part.

The volume at her chest was outrageous.

Not quite on Yamano’s scale, but given her cinched waist and softly rounded hips, the bust was clearly disproportionate.

Worse—the bikini fabric was minimal.

A deep, defined cleavage formed between the cups; the slightest vigorous movement looked like it would send everything spilling free.

I froze, words completely deserting me.

Yamano’s lips curled upward in a knowing smirk.

“Yup～ That’s exactly the reaction. Yukina’s the type who looks way smaller when she’s dressed. But surprise—she’s got hidden mega-boobs.”

“Hina, stop it!”

Sakuraba’s face went nuclear-red—steam practically hissing from her ears.

She clutched the hoodie she’d brought along to her chest like a shield.

Even I couldn’t keep staring after that.

Afterward we shuffled as a group toward the pool area.

“You’ve gotta give Sakuraba-san a proper compliment later, man. Seriously.”

The handsome guy whispering that next to me was getting on my last nerve.

Our group drew eyes from every direction—guys and girls alike.

It was inevitable.

Three of the school’s most beautiful girls in swimsuits?

If we opened an impromptu photo session, we could’ve charged admission.

None of us were particularly strong swimmers, so we stuck to the shallow pool where everyone could stand.

Shingo had brought a beach ball, so we spent a while tossing it back and forth, splashing around.

Of course the handsome one came prepared.