It was Sunday. The second day of Golden Week.

Pool day.

I’d been waiting for this. Seeing Kotoha and Hikari in swimsuits—what else could I possibly ask for?

I stretched, pulled on a shirt, and checked my phone. A message blinked on the screen.

[We’ll be ready soon.]

I grabbed my bag and headed out.

By the time I parked in front of the Minase house, Kotoha was already stepping out. A cardigan draped over a light dress, her bag slung across one shoulder. She jogged down the last step, her hair swaying neat and glossy in the morning sun.

“Good morning, Souta-kun!”

“Good morning.”

She caught my hand before I could open the door, her cheeks pink. She leaned in close, whispering.

“…Souta-kun. I already put it in.”

My pulse jumped. She slipped something into my hand. A small remote.

Her lip trembled as she bit it. “Don’t let Mom see.”

She climbed into the seat like nothing happened, fastening her belt. Meanwhile, blood already rushed hot down my body. The thought of Kotoha sitting there with a vibrator humming inside her was quite erotic.

The front door opened again. Hikari walked out calmly, carrying her bag, her smile as warm as ever.

“Good morning, Hikari-san.”

“Morning, Souta-kun. A real pool this time, right?”

“Maybe.”

“I don’t mind the water park again.”

“Unfortunately, it’s just the pool today.”

“That’s fine.”

I took her bag and opened the door for her, tucking it into the back.

The engine hummed as we rolled out onto the street. Kotoha sat stiffly beside me, her eyes glued to the window, ears pink. Hikari leaned back, humming faintly, scrolling on her phone.

Golden Week roads were crowded. Families crossed hand-in-hand. Cars jammed toward the shopping district. Kids lugged float rings bigger than their bodies.

Kotoha sat with her cardigan folded neatly in her lap, her legs pressed tight together, back rigid.

You’re way too tense, Kotoha-chan. Let me help.

I slid my thumb across the remote.

Click.

Bzzzt.

She jerked, both hands clutching her skirt tight. A faint squeak caught in her throat before she forced it into a cough.

Hikari looked up. “You okay?”

“Y-yeah.” Kotoha turned quickly toward the glass.

Click.

Her shoulders quivered. Her lip caught between her teeth, knuckles pale where she clutched her bag.

“Excited?” Hikari teased, her smile gentle. “You’ve been restless since last night.”

Kotoha’s ears turned scarlet. “I-I guess so…”

I bit back my laugh, eyes fixed on the road.

Kotoha glared at me with wide, watery eyes, cheeks burning as if I owed her something I hadn’t paid.

“Don’t worry, Kotoha. I’m excited too.”

“It sounds like you’re making fun of me when you say it like that.”

“I’m not.”

“You are!”

“Maybe.”

“Humph!”

The car filled with the hum of the engine and faint music from my playlist. Kotoha shifted subtly, thighs squeezing together, trying not to squirm.

I clicked the toy off. She exhaled softly, shoulders sinking in relief.

From the mirror, Hikari tilted her head. “You both look tense. Relax. It’s just the pool.”

“Kotoha looked tense, so I became tense too.”

“Don’t blame me!”

We chuckled.

@@

The parking lot overflowed with families. Kids ran ahead with towels flapping like banners. Coolers, float rings, chatter everywhere.

Normally I hated crowds, but if it meant seeing Hikari and Kotoha in swimsuits, I’d endure anything.

We pushed through the entrance, the smell of chlorine and sunscreen thick in the air.

“I’ll wait outside after changing,” I said.

“Don’t run off again~” Hikari teased with that soft smile.

“Yes, yes. I understand.”

Kotoha tilted her head, not understanding us.

Inside, I changed quickly and waited by the benches. I wasn’t about to repeat last time’s mistake. With women like Hikari and Kotoha, leaving them unattended was asking for trouble.

Kotoha came out first.

The pale blue frills clung to her skin perfectly. The straps dug lightly into her soft shoulders, lifting her chest high and straining the thin cups. The fabric pressed her breasts together, a deep line of cleavage trembling with every nervous breath.

Her waist narrowed sharply into the flat line of her stomach before flaring into hips hugged snug by the ruffled bottoms. The material rode high on her thighs, exposing long pale legs that gleamed under the light.

She crossed her arms quickly, cheeks burning, but that only pushed her breasts up higher, round and soft beneath the tight fabric.

Then Hikari appeared.

A black bikini that looked scandalous, held up by nothing more than thin strings knotted at her neck and hips. The glossy material clung to every curve, her breasts full and heavy, the swell of her cleavage deep enough to fit a hand.

Each step made them shift subtly, as if the strings barely contained their weight. Her waist curved smoothly into wide, maternal hips, the black bottoms hugging the swell of her ass and leaving the lines of her thighs bare.

It was lethal. I went rock-hard instantly, hiding it behind my bag with practiced ease.

“Kotoha! Hikari-san! Over here!”

Kotoha sighed in relief and hurried over, her chest bouncing with every step.

Kotoha-chan, those are dangerous weapons. You’ll kill someone one day.

My thumb brushed the remote again.

Click.

Bzzzt.

“Hnnng—ahh!~”

I caught her before she stumbled.

Hikari laughed softly. “Careful! Don’t run at the pool~”

Kotoha hugged her arms tighter, pressing close against me. “Souta-kun, you’re so mean…”

I ignored her whisper, enjoying the way her body writhed faintly against mine.

Then my eyes lifted to Hikari, and my chest tightened.

What happened to her modesty? Did I do this?

“Hikari-san, is that a new swimsuit?”

“Just yesterday with Kotoha. What do you think?”

“You look wonderful. Honestly, it’s blinding.”

She covered her lips with her hand, smiling. “Such a sweet talker. You look great too, Souta-kun. Been training?”

Her eyes traced me up and down. That stare made me throb almost painfully. I’d need to take it out on Kotoha later.

“I’ve been training,” I said.

Beside me, Kotoha bounced on her toes, glaring.

Look at me! Look at me!

Her eyes screamed for my attention.

“Kotoha. You look… alright.”

“Hey!” She puffed her cheeks.

“Just kidding. You look amazing.”

“Hehe~ Always teasing me… geez.”

“I don’t have to be polite with you, right?”

“Are you saying you only compliment me to be polite?”

“You know that’s not true, Hikari-san.”

Hikari chuckled softly. “Fufu. I just wanted to be sure.”