29-75

EP.75 Under the Bridge with My Sister 

The shade beneath the bridge was cozier than expected. 

Occasionally, a cool river breeze contrasted with the heat in my lower body, creating a strange sensation. 

The sound of flowing water and the faint laughter of someone in the distance only heightened the thrill of this secret situation. 

“Huu… Hngh…” 

Akari, who had brought me here, frowned as she gently stroked my hard, swollen “thing.” 

Each time her small, soft hand wrapped around my hot shaft and moved up and down, it felt as if a fire was rising from my lower belly. 

Her slightly sweaty palm rubbed against my shaft, making lewd, obscene sounds. 

Squelch, squish, squelch. 

“Here, like this…” 

Since the bathhouse incident, Akari seemed to have gotten used to my whining. 

At first, she was so awkward she could barely touch me, but now she was adept at catching on to what I wanted. 

For example, right now, she was stimulating just under the glans with a bit of pressure, just the way I liked it. 

“Ah, it twitched inside… Is this what feels good…?” 

It must be thanks to the “Spoiled Child” trait. 

This little body’s devilish charm broke down an older woman’s guard, slowly injecting the sweet poison called maternal instinct. 

Under the pretense of “I have to turn my brother back to normal,” Akari was stepping deeper into forbidden territory. 

See, even now, her hand holding me was unconsciously gripping a bit tighter. 

The urge to climax was building to the point it could burst at any moment, but I purposely twisted my hips and held back. 

It wouldn’t be fun to finish like this. Besides, I was getting tired of just using her hand. 

I was starting to wonder how those red, moist lips would treat me. 

“Y-Yuu… aren’t you done yet…?” 

Normally, I would have finished by now, but since I wasn’t climaxing, Akari looked up at me anxiously. 

…Sweat beaded on her forehead, running down her nose and hanging precariously from her chin. 

Even so, her hand was focused solely on vigorously stroking my veiny shaft. 

“Hngh… Uhn… S-sis… it feels weird…” 

“Why, why? What’s wrong? Did I do it too hard?” 

Her voice was a mix of worry and anxiety. 

To her now, I was no longer a nuisance but a small, fragile little brother she felt compelled to care for. 

Of course, the direction of that “care” was more than a little twisted. 

“I-I don’t know… I feel like I’m going to come, but it just won’t… It’s so frustrating, sis…” 

I acted restless, squirming my body. 

After all the sex I’d had, controlling my climax like this was easy. 

Just as I’d planned, a deeper shadow of worry crossed Akari’s face. 

She stopped moving her hand and stepped back half a step, biting her lip in thought. 

Her slender throat bobbed as she swallowed nervously. 

“Don’t worry, Yuu… I’ll… I’ll figure something out for you…” 

Her hesitation didn’t last long. 

Having made up her mind, Akari crouched down in front of me and slowly brought her face toward my exposed lower half. 

Her brown hair shimmered in the sunlight. 

‘That’s right. This is what I wanted.’ 

Even though I knew it was coming, I couldn’t help but feel a rush of excitement. 

Akari’s soft hair tickled my inner thighs. 

Her warm breath brushed the sensitive tip of my glans, sending shivers through my whole body. 

Finally, something soft and warm enveloped me as if to swallow me whole. 

“Hnngh…! Ngh…!” 

…As expected, this was a whole different level from her hand. 

The inside of Akari’s mouth was hotter and wetter than I’d imagined. 

She was still clumsy, but her tongue worked hard, as if determined to please me. 

She circled my glans, teased the tip, then sucked the whole shaft in with increasing intensity. 

Sometimes her teeth grazed my tender skin, sending jolts of near-painful pleasure. 

I barely managed to stifle my moans, unconsciously stroking Akari’s hair. 

Fortunately, she seemed completely focused on what she was doing, oblivious to everything else. 

“Sluurp, slurp…! Suck, gulp…! Churp…” 

I’d had plenty of blowjobs before, but never from such a small body. 

And even if it wasn’t real, getting this kind of service from a “sister” made my brain melt. 

With Akari’s increasingly intense and explicit mouthwork, the urge to climax surged through me like lava. 

As my vision blurred with ecstasy, I gripped her hair a little tighter. 

“S-sis…! I-I’m really about to come…! All of it…!” 

At my desperate warning, Akari only hugged my waist tighter, as if reassuring me to let it all out. 

I could feel her throat working as she swallowed me deeper. 

“Chururup, slurp…! Gulp! Suck…” 

“Ngh…!” 

At last, I couldn’t hold back and thrust my hips, burying myself to the hilt in her mouth. 

Spurt, spurt… 

My cock throbbed violently, pumping hot, thick semen deep into her throat without pause. 

I could feel it flooding her mouth, sliding down her throat, and filling her up. 

“Puh…! Ngh, ngh…!” 

Akari trembled all over from the shock, but she didn’t let go, swallowing every last drop. 

Her eyes were moist, her cheeks flushed. 

Only after several shudders did the intense afterglow subside. 

Panting, I nearly collapsed onto the damp ground beneath the bridge, but Akari gently supported me. 

“Thanks, sis.” 

“Ugh… ngh… gulp… haah… haah…” 

A bit of my white fluid lingered on her lips, which were now red and slightly swollen. 

Her gaze, dazed and unfocused, was hard to describe. 

But one thing was clear: something had definitely changed inside her. 

Judging by her reaction, it wouldn’t be long now. 

With no mood left for play, we left the riverside and headed home. 

On the way back, Akari didn’t say a word. 

After returning from the river, 

the house felt heavier than it had in the morning. 

“You’re back.” 

Daiki, sprawled on the sofa fiddling with his phone, didn’t bother to hide his sulking. 

His face was openly displeased, and his constant sighs were enough to grate on Akari’s nerves. 

Dinner was a disaster. 

Even with Akari’s effort, Daiki just picked at his food, complaining about the lack of good dishes. 

“There’s nothing to eat in this town? Can’t you at least make some meat?” 

Akari nearly snapped at his brusque words, but held back. 

She didn’t want to fight or please him anymore. 

She ate in silence, and Daiki seemed even more annoyed by her lack of response. 

Only Yuu quietly ate, sensing the awkward atmosphere. 

In the end, Daiki left the table without finishing, and Akari was left alone at the cooling dinner table, sighing deeply. 

She had no one to lean on. She wanted comfort, but the person who should have been closest only hurt her more. 

Her heart ached with emptiness. 

After dinner, Akari halfheartedly did the dishes and retreated to her room. 

Night had fallen outside, and only the sound of insects filled the silence. 

Sitting on her bed, knees drawn up, she replayed the day’s events in her mind. 

Daiki’s selfishness, and… Yuu. 

‘I can’t do this… I really can’t.’ 

She repeated it over and over in her mind, but the memory of crossing the line, and the addictive pleasure that came with it, had already seeped into her body and soul. 

Fumika had said, “If you fulfill his desire, he might return to normal.” 

That phrase clung to her like a sacred spell, or an inescapable swamp. 

Maybe, just maybe, this really was for Yuu’s sake-a dangerous self-justification began to take hold. 

Then- 

Knock, knock. 

A timid knock sounded at the door, followed by Yuu’s frightened voice. 

“Sis… are you awake?” 

Akari flinched. Why was Yuu here at this hour…? 

“No, I’m not asleep… What’s wrong, Yuu?” 

When she opened the door, Yuu stood on the threshold in pajamas, looking like he might burst into tears. 

His eyes were red, and his small hands clutched the front of his pajama pants. 

“Sis… I… had a scary dream…” 

His voice trembled with tears. 

“A scary dream?” 

“Yeah… You… you left me and went far away. No matter how much I called, you didn’t look back…” 

Yuu soon clung to Akari’s clothes, eyes brimming with tears. 

The trembling of his little hands was transmitted directly to Akari. 

“Sis… are you going to leave me? Don’t leave me alone… please, sis… okay?” 

Seeing the pitiful child clinging to her, Akari’s heart wavered helplessly. 

The pain and loneliness from Daiki, and her complicated feelings for Yuu, all crashed over her at once. 

‘I can’t… but…’ 

Akari looked down at Yuu with wavering eyes. 

In her brother’s gaze, there was only pure dependence and fear, all directed at her.