Chapter Index

    ㅡSnap, slap, slap, slap… !

    Water droplets splash on the surface of the water.

    Every time your hand moves, it creates ripples.

    The sound of splashing water gets faster and faster.

    ㅡSlang, clang… ! with a splash!

    The wave that started out as a gentle rippling was soon lapping like a strong wave. The strong water current hits the bathtub railing and creates light foam.

    “Ah… Uh, sister… ?”

    Like a tsunami in a calm bathtub,

    A violent storm rages in my heart.

    My stoma, which sank in the rough tsunami, twitches with difficulty.

    “Why are you doing this, Sihu?”

    “So, your hands are too fast… … .”

    Iria’s touch makes my strength go away.

    Because of this, his speech was also slurred.

    I start whining like someone who hasn’t woken up yet.

    ㅡCrack, crack, crack… !!

    “Hehe, just wait a little longer?”

    Iria doesn’t stop holding her hand even when I ask her to.

    Although this was an expected result, it was difficult to endure.

    Nevertheless, I want to entrust myself to her and pamper her.

    “Kuhhh… ? Well, don’t… … .”

    My back is shaking from the stimulation I feel for the first time.

    Perhaps because it is underwater, the movements of the hands are lighter.

    Every time I move my hand, I feel the resistance of the water, so my dick twitches sensitively.

    “Haaa… This feels so weird, I feel like I’ll go away soon─ ugh… ?!”

    It was then.

    For a moment, a voice steeped in pleasure is heard.

    That’s right… … .

    ㅡPinch… !

    The stimulation on the cock stopped,

    As a result, a dizzying sensation was felt in my chest.

    Needless to say, Iria pinched the top.

    “You can’t go away already-♡ If you’re so impatient outside and want to go, are you going to get horny and cum anywhere?”

    “Well, it’s not like that… … .”

    “I didn’t know our sister-in-law was this lewd?”

    “Huhhh… … ?”

    Iria puts her lips close to my ear and whispers in a low voice as if teasing me. Every time her lips move, you can hear the obscene sound of saliva crackling inside her mouth.

    “Seeing that you can’t deny it, you’re admitting that you’re lewd, right?”

    “Well, it’s not like that… … !”

    “Why not? Would you say that even if you looked down? I’m clearly letting go right now, but why is this happening?”

    ㅡKkkeoltteok, kkeoltteok… !

    The dick twitches alone in the water.

    Pathetically, as if asking me to please stimulate him.

    Iria’s hand was currently caressing my chest. Just like at the bottom, he gently touched the hardened nipples as if teasing them.

    “I’m jerking my dick while feeling the tip of a man’s head?”

    “… This is because my sister touched it… … .”

    “variation. Tae.”

    “… … ?!”

    A strange voice suddenly penetrates my ears.

    Normally, it would be an unpleasant sound, but

    For some reason, just one word makes my heart flutter.

    As she said, there was no stimulation below, but an eel was wriggling in the water and sticking its head out.

    “Cook-Cook-♡ Are you sure you just felt the word pervert? It’s really cute… … .”

    “Keuuuut-? No, don’t make fun of me… !”

    I turned my head and shouted in timid defiance, but… … .

    -Whew!

    I had no choice but to return my gaze to the original position.

    As expected, Iria was already putting the mask on her chin.

    I didn’t know what would happen if we made eye contact for no reason.

    “Hmm-? Sihu? Why are you avoiding my eyes?”

    “Ma, please put on your mask first! You were surprised… … !”

    “Ah, sorry. I wanted to let you hear my voice vividly filled with affection. … Now that I’ve written it again, can you look at my face?”

    Iria moves her hand towards her face for a moment and then requests another meeting. Her voice was still full of subtle playfulness.

    “By the way, why is your face suddenly… … ?”

    I grumbled and turned my head again.

    Even though the prank was mischievous, it was filled with affection.

    That’s why I didn’t hate every moment I spent with her.

    Because it was proof that he was loved that much. Because he was the one who reached out to me, who had always been alone for a long time. Because I liked Iria as a person.

    “… Huh? Who, sister-?!”

    But this one… I think the prank is a bit harsh. I had clearly put up my mask, but what came into my field of vision was Iria’s bare face, smiling. It was a bright smile full of playfulness.

    The mask was still on his chin.

    I immediately closed my eyes as I felt an ominous feeling, but fortunately it was nothing more than false hope.

    “Chueueup… … ♡”

    “Lower pressure-?! Breathe… … ?”

    Iria kisses me with a mischievous smile.

    It’s really mischievous, but I can’t hate it.

    I never thought I would kiss you like this.

    It’s like Iria with the switch turned on.

    Usually, she was like an infinitely kind older sister, but once her eyes changed, she started to annoy me more than anyone else and became more sincere.

    “Jjoeueup, side… ♡”

    “Chu-eup, chubby-! Jjook… !”

    Lips and lips, tongue and tongue are intertwined.

    The sound of body fluids mixing naturally resonates.

    The sound of scraping echoes like an echo in the bathroom.

    ㅡSnap, slap… !

    The waves bounce as if they are striking a chord.

    It was like that. Her hand moved again.

    It was just a gesture for pleasure.

    ㅡUgh, swoosh… … .

    Additionally, use the other hand to stimulate the nipple. Every time that happens, my cock and waist instinctively tighten and twitch.

    It feels like the pleasure is doubled as my sensitive parts are stimulated and penetrated at the same time.

    ‘Iria’s tongue… It feels good because it’s warm… … . I can’t stop my tongue. Plus, I feel like I’m going crazy because I’m being stimulated up and down at the same time… ! I feel like my back is shaking… This is something strange… … ?’

    A surge of pleasure and stimulating sensations rush through you. I had no choice but to accept it as is. I felt dizzy, as if I was on drugs.

    “Haup, hehe, hehe… ? Haaaa-♡ Wow… … ?!”

    The pleasure emitted from the brain takes over the entire nervous system. Thanks to that, it seems as if my reason has collapsed and a vulgar sigh escapes from the corner of my mouth.

    There was no time to feel ashamed.

    I was busy chasing pleasure rather than shame.

    My whole body was focused only on feeling pleasure.

    ㅡSlump, splash, crackle, slap… !

    Iria speeds up, spraying water everywhere. In front of her, the resistance of the current was not an obstacle at all. I just moved my arms and squeezed with overwhelming force.

    It’s slowly becoming difficult to bear.

    No, I’ve already endured a lot.

    It’s really no longer possible. I can’t stand it.

    “Hehe… Sihu, are you feeling good?”

    “Haha, yeah… … .”

    “You’ve become a complete baby? Even after all this, how are you 26 years old?”

    “More than that… Who, sister-?! Haha, I think I’ll go now… … !”

    “Hmm? It shouldn’t be like that already-?”

    ㅡTaaa!

    With those words, Iria lets go of his cock. She licked her lips with a sinister smile and pulled up her mask.

    He looked satisfied when he saw my half-melted expression in the bathtub.

    “Hey… ? Uh, why… … ?”

    “I told you earlier, right? Are you saying they will teach us not to park carelessly outside?”

    “!?”

    “It’s the same with packing. If you really want to go, you have to get my permission first, right?”

    “Well, like that… … .”

    “At least if I take care of it, you won’t cum anywhere just because you’re horny, right? Isn’t that right?”

    “… … .”

    “So, it would be better to get used to it from now on, right? If you really want to go now, would you ask your sister?”

    Iria’s eyes are curved like a crescent moon.

    A look filled with insidiousness uncharacteristic of a hero.

    On the other hand, his blue eyes were sparkling with anticipation.

    ㅡTeomeok… !

    I couldn’t escape those eyes. This was because she was grabbing my chin with one hand and forcing eye contact.

    Then there was only one way for me to be freed from this situation.

    “… I want to go, sister… … .”

    Asking Iria for permission.

    There was no other way to escape.

    Her eyes were more serious than ever.

    It felt like I would never be able to ejaculate on my own even if I wanted to.

    “Hmm-? what? I can’t hear you very well? And if you tell me clearly what you want to do and how, won’t I understand?”

    Demands that are difficult to say out loud are cruelly rejected. But this time too, there was nothing I could do. I have no choice but to follow her instructions… … .

    “Nu, I want to go away with my sister’s touch… ! Please do me a favor… … .”

    My face turns bright red as I ask permission.

    I thought I was just giving up reason for pleasure,

    The shame I felt for the first time rose from the bottom of my chest and I thought I was going to die of embarrassment.

    “Shall I say it again? What do you want to pack? … ?”

    “Semen… I want to cum, sis… … .”

    Although I was ashamed and ashamed, I declared defeat to pleasure and longed for ejaculation even at the cost of embarrassment.

    It felt strange to be allowed to have access to my body by someone else.

    “Haaa… ♥ It’s so pretty that you ask for something while crying like that… … .”

    Iria was staring into my eyes with admiration. I guess I’m finally satisfied with my answer. She couldn’t take her eyes off me, as if she was possessed by something.

    ㅡChaaa… … !

    At the same time, my body is suddenly lifted up with a sudden wave sound. Iria lightly lifted me from behind.

    “Noona… … ?!”

    She immediately made me sit on the railing of the bathtub.

    “Stay still. Since I did well as I learned, I should give a reward, right?”

    “Sang… … ?”

    ㅡUgh… !

    With those words, a heavy feeling is felt in the lower abdomen.

    When I looked down, I saw something… … .

    “Ah? What are you doing now… … ?”

    “What is it? I’ll make you feel good with my sister’s breasts. They say men are dying for women’s breasts?”

    ㅡKuuuuk♥

    Out of nowhere, Iria inserts my object into her chest and takes a bite under her mask.

    “You don’t have to endure it this time. So, please feel free to go away-♥”

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