The pool shimmered under the noon sun. Children splashed at the shallow end, couples floated lazily on rings, and whistles from lifeguards echoed overhead.

Kotoha smiled as she kicked off her sandals.

“It’s been forever since I came to a pool. I’m glad I can go with you two!”

She hurried ahead, towel in hand, crouching at the edge to dip her fingers.

“It feels so nice…”

I stepped into the water first. She followed quickly, the cool shock making her laugh as she waded in up to her waist.

“Careful.”

She splashed a little toward me, her smile bright. “Come on, Souta-kun!”

When the water reached her chest, her arms reached for me anyway, looping around my shoulder. “Still, don’t let me drift off.”

“I won’t.”

“…I won’t be able to swim if you turn it on…”

Click.

Her cheerful expression faltered for a second. She pressed closer, her bikini clinging to me under the water, her breath catching.

“You’re acting spoiled,”

Hikari called as she swam past gracefully in her black bikini. She floated on her back, her hair spreading out like ink.

“You look like you’re enjoying yourself too much. Don’t you feel bad for Souta-kun?”

“I-I’m allowed to!”

“Fufu. Is that true, Souta-kun?”

“Whatever she says.”

“Geez…” Kotoha’s voice turned into a whisper. “Since I put in a vibrator for you, I can act spoiled, right?”

“Of course.”

I slipped one arm under her knees and lifted her up. She gasped but laughed, holding onto my neck.

Princess carry, right in the middle of the pool.

A few heads turned toward us. Kotoha didn’t care. Her smile wouldn’t fade, her legs kicking lightly in the water.

“Happy?” I asked.

“…Very,” she whispered, resting her forehead against mine.

We drifted back to the poolside, settling near the lounge chairs. Hikari slipped on her sunglasses and stretched out with calm elegance, the black bikini lines sharp against her pale skin.

Kotoha leaned against me on the edge, feet still dangling in the water. Her cheeks were pink from the sun and laughter.

Hikari sat up slightly. “Souta-kun, can you get us some drinks? I’ll have a melon soda.”

“Cola for me!”

“Got it.”

I stopped for second to check for any weirdos around us. I was still skeptical about leaving Hikari and Kotoha alone. But seeing that we were surrounded by families and kids, I left comfortably.

The vending stalls were packed. I waited in line with my wallet.

“Hey.”

Two girls stepped up beside me, tall, curvy, college age. Their bikinis were cut bold, straps sitting low on their hips.

“You here alone?” one asked, tilting her head.

The other leaned closer. “You look strong. Swim with us?”

I almost couldn’t hold back my laugh. This could happen? If I wasn’t in love, I would go flying right now.

“I’m with someone.”

“Aw, don’t be shy,” the first laughed. “We won’t bite.”

Before I could answer, a shadow passed between us.

Hikari took my arm and slipped in beside me with a smile. “I’m sorry, he’s with me. Would you mind backing off?”

The girls froze.

Hikari’s presence was unrealistically beautiful. The black bikini, the curve of her chest, her mature charm. It could make any woman feel inferior.

“I’m sorry onee-chan. Didn’t mean to intrude. Nice catch!”

“It’s alright. I have to keep a close eye on him.”

“Have fun, you two!”

The interaction was surprisingly pleasant.

We got our drinks before going back. Melon soda for Hikari, cola for Kotoha, pineapple juice for me.

“You attract too much attention.” Hikari laughed.

“I didn’t know.”

“I didn’t know last time either.” She was talking about how she got hit on when she went to the water park with me last time. How could you not know how beautiful you are, Hikari-mama?

“I guess we’re even?”

“You have to save me if I get hit on again.”

“Of course.”

I gave Kotoha her drink.

She sipped on it with a happy expression. “You were gone for a while, so Mom went to check.”

“Good call.”

“Did something happen?”

I looked at Hikari before responding.

“Just a long line.”

“Suspicious…”

We sat together at a table under the shade, the sound of water splashing carrying from every direction.

Kotoha sipped her cola through the straw, her cheeks puffed as she drank. She kept stealing glances at me, eyes narrowing as if she was trying to read my face.

I set my drink down and leaned back in the chair. “Don’t look at me like that.”

“I can’t?”

“Look all you want.”

Kotoha blushed and looked away.

Hikari sat across from us, melon soda in hand. She tilted her can and took a long sip. When she tilted it up, a drop ran down the can, trailing across her chest.

She blinked. “Ah.”

The green soda had spilled into her cleavage, glistening between the curves framed by her black bikini.

Thank you for blessing my eyes, Hikari-mama.

Kotoha choked on her drink. “M-Mom!”

I moved without thinking, leaning across the table with a napkin. The cool liquid still clung to her skin, slipping lower. My hand pressed the cloth lightly against her chest, wiping the soda away.

Hikari became flustered, turning red. “Souta-kun?”

Kotoha slammed her can onto the table, red to her ears. “Souta-kun!”

I pulled my hand back, tossing the napkin aside. “I’m sorry, I moved without thinking. It would’ve gotten sticky.”

Hikari chuckled softly, sipping again like nothing happened. Her blush disappeared almost immediately. “Thank you.”

I was rock hard again. I shifted to try to adjust my cock under my trousers.

Kotoha seemed to notice.

“Mom, I’m going back for a swim with Souta-kun.”

“Don’t forget to stretch!”

“I’m just going to jump in!”

“Take care of her, Souta-kun.”

“Roger.”

Kotoha took my hand and covered my crotch with her body as we moved to the pool.

Kotoha was so thoughtful. I didn’t think she would save me like this.

The moment Kotoha pulled me down into the deeper end, her body clung to mine. Hikari stayed stretched out on her chair, sunglasses in place, looking half-asleep. Nobody paid us any attention.

“Souta-kun, I saw that you were hard…”

“Thanks. You saved me there.”

Her arms locked around my neck, her lips trembling against my chest. “…If you want… you can… use me.”

I slid my hand down, freed myself under the water, and tugged her bikini bottom aside just enough to press against her. Not inside—just tucked under the fabric, the thin cloth holding me flush against her slit.

“Ah—Souta-kun, i-it’s… right there… Are you going to put it inside..?”

“I’ll just rub it.”

“Mhmm… okay…”

Her thighs snapped tight around my waist, locking me in. Her voice was faint, trembling against my ear. “It’s so hot… I can feel everything…”

I ground my cock slowly along her folds, the damp fabric dragging between us. Every stroke rubbed her clit through the cloth, each movement drawing a sharp twitch from her hips.

Her gasps came in quick bursts, muffled against my skin. “Nnnh…! I-it’s sliding right over… ahh… I can’t… it feels too good…”

I adjusted my angle, pressing harder, letting the head drag up and down her slit with more weight. The fabric bunched and shifted, forcing every ridge and vein against her most sensitive spot.

Her hips jerked in return, clumsy at first, then frantic. “Ahh—n-no… I’m… I’m moving on my own…”

Her nails dug deeper into my shoulders. The water rocked around us with each desperate grind. Her breath turned ragged, her body trembling harder the longer I kept her pinned against me.

She buried her face in my neck, stifling a cry that slipped anyway. Her thighs clamped down, locking me in place, her whole body shuddering.

“Ahhh… I-It’s—too much… I’m… cumming—!”

The tremors wracked her frame. Her slit pulsed hot against me even through the bikini, her body seizing in short waves until she slumped against me, limp and shivering.

“Kotoha. I’m going to cum soon.”

Her lips brushed my ear, breathless. “It’s going to leave a mess… I’ll get it with my mouth…”

Before I could reply, she slid down my chest, her hands dragging along my body under the water.

Her hair floated like silk as she ducked beneath the surface, her lips wrapping tightly around me.

The muffled world went silent except for the steady suction, the ripple of water. Her tongue traced every inch, her throat pulling with greedy rhythm.

I held her shoulder, my jaw tight, hips twitching helplessly.

She opened her eyes beneath the water, green and mischievous, staring straight into mine.

That look finished me. My body shook as I released hard into her mouth. The water swirled faintly around us, but she swallowed it all, her throat working until every drop was gone.

She surfaced, gasping, water streaming down her cheeks. Her lips curved into a lewd, glistening smile.

“…See? No mess. But… there was a lot.”

I brushed the wet hair from her face, smiling back. “You’re unbelievable.”

Her blush deepened. She clung to me tighter, hiding her face against my chest.

“Souta kun… were you hard because of me? …Or was it because of Mom..?”

“Can I say both?”

“That’s the wrong answer, Souta-kun! Why are you looking at her?”

“Of course, I find you more alluring.”

“Hnng, you’re terrible.”

Her reaction was surprisingly tame?

I said it to test her but my oyakodon dreams were proceeding forward smoothly.

The sun dipped lower as the crowds began to thin. Lifeguards whistled for closing, the echo sharp against the walls.

Kotoha and I climbed out of the pool together. Her hair clung to her cheeks, her face still faintly pink. She pulled her towel around her shoulders, pressing it close as if to hide the tremble still left in her body.

Hikari was waiting by the chairs, sunglasses pushed up, sipping the last of her drink. “You two took your time.”

“You should’ve came with us.”

Kotoha avoided her gaze, mumbling into her towel, “The water was nice…”

“I didn’t want to interrupt.”

“Don’t say that. It would’ve been more fun with you around, Hikari-san.”

“Would it?”

Hikari grew more mysterious in my eyes. On one hand, she wanted Kotoha and I to grow closer. On the other, she looked like she was starting to see me as a man. Was I looking too much into it?

We gathered our things and walked out through the gates. It was an eventful day.