Chapter Index

    “…Should I try it once?”

    In the end, I succumbed to my instincts.

    I couldn’t help it.

    How could I resist when Yuna was tempting me with an onahole squeezed between her bursting breasts?

    I guess I should postpone studying for the test, since it’s not urgent right now.

    “Really? Awesome!”

    I don’t know if Yuna’s happy because she gets to do something kinky with me or because she’s putting off studying, but either way, she likes my reaction.

    As I approached her, she knelt down and adjusted her height so that my crotch was level with her breasts.

    “Hurry up and take it out, Oppa!”

    “Okay.”

    As I pulled down my pants and underwear at the same time, my already hardened member popped out.

    Seeing this, Yuna squeezed a generous amount of lubricant into her hand and began to carefully apply it to the shaft of my penis.

    Swish, swish, swish.

    “Oh. It already feels good?”

    “Isn’t it cold?”

    “It was cold, but it got better because of your hand.”

    “That’s a relief. Don’t get too excited and cum already, okay?”

    Thanks to her soft and warm touch, my lubricant-coated cock glistened.

    Yuna, now ready, neatly gathered her breasts with both arms and said,

    “You can put it in now.”

    The onahole, which had been slightly visible just a moment ago, was buried in her cleavage and disappeared.

    Only the transparent lubricant flowing below indicated that an onahole was there.

    I placed my hands on Yuna’s shoulders and slowly brought the head of my penis to the entrance of the hole.

    ‘I’m nervous for some reason because I can almost guess what it’ll feel like.’

    After a moment of useless hesitation, I immediately inserted my penis into the hole and thrust upwards.

    Squish…!

    “…Oh.”

    I couldn’t help but exclaim.

    The squelching, undulating sensation that massaged my shaft with the help of the lubricant.

    If it weren’t for the lack of warmth, it would have felt no different from inserting it into a real person.

    In fact, because this onahole was modeled after Yuna’s insides, it felt as if I was actually penetrating her, not just her cleavage.

    “Oppa, how is it?”

    “It’s way better than I thought?”

    “Is it the same as putting it inside me?”

    “Yeah, it’s so realistic, it’s amazing. I’m going to move.”

    Squish, squish, squish.

    With my leisurely hip movements, the head of my penis repeatedly poked in and out of her cleavage.

    At the same time, a moan escaped my lips.

    “Wow, this is no joke….”

    “Is it that good?”

    Instead of answering Yuna, who was looking up at me as if amazed, I continued to move my hips.

    The pleasure that rushed in every time my penis rubbed against the inner walls of the onahole, which perfectly replicated Yuna’s vaginal folds.

    My brow had been furrowed like an adult film actor’s for a long time now.

    If it were just the sensation of the onahole, I would have been able to control my expression to some extent.

    But the very situation of using an onahole inserted into Yuna’s breasts like a vagina was creating a strange excitement.

    “Heh….”

    “Hehe. It’s kind of cute how Oppa is shaking his hips because he feels so good.”

    Unlike me, Yuna seemed to be simply enjoying the situation.

    I was always the one who was relaxed and in control, but it seems she’s enjoying the role reversal.

    Was she thinking of wanting to remember this moment forever?

    She was staring intently at my face.

    “I’ll make you feel even better!”

    She moved her breasts up and down like she was doing a handjob with them.

    Thanks to this, the friction between my penis and the onahole intensified, and I even felt a shiver down my spine.

    Naturally, my hips became more urgent, and Yuna, satisfied with my reaction, shook her breasts even harder.

    “Yuna…!”

    “Do you like my breast vagina that much? I won’t run away, so you can slowly thrust.”

    She said that, but didn’t stop her busily moving breasts.

    Of course, my body wouldn’t listen to me if I tried to stop my hips, and the tightness in my groin was quickly growing.

    “Yuna, now…!”

    “Hmph!”

    Yuna’s lips suddenly bit down on the head of my penis as she sensed the prelude to ejaculation.

    The warm body temperature of a real person that could not be replicated with an onahole.

    The moment I felt it, the urge to ejaculate that I had been holding back exploded.

    “Mmph!”

    Gulp… gulp…!

    Yuna sucked on the head of my penis while swallowing my semen.

    Feeling the tightness of the onahole and her mouth at the same time made my head feel like it was going numb.

    “Huff….”

    “Was it that good, Oppa?”

    Yuna looked at me, still lost in the afterglow, and asked in amazement.

    I nodded honestly, without exaggeration or understatement.

    “Yeah…. It was completely different.”

    “I’ll grab it with my hands and move it this time!”

    It seemed like she was completely hooked on making me cum with the onahole.

    As Yuna requested, I sat comfortably on the living room sofa, and she sat next to me with a beaming expression.

    “Okay, Jihoon Oppa. It’s time to feel good with the onahole vagina again.”

    She brought the onahole to my groin with a tone like a kindergarten teacher.

    I wanted to say something to her for treating me like a child, but the moment the onahole swallowed my penis, those thoughts vanished.

    “Heh, good…!”

    “Really? Is it better than doing it with breasts?”

    “Yeah…!”

    It seemed that the force of gripping it with her hands was inevitably stronger than squeezing it between her breasts.

    In addition, the speed of moving it up and down was incomparably faster, so the pleasure was much stronger.

    Squish, squish, squish, squish!

    “Yuna, a little gentler…!”

    “I’ve never heard you say that before! I’m going to keep going because your face looks so cute when you’re feeling it!”

    Yuna, who was in high spirits, gave me a reckless handjob.

    Just as I was captivated by the sensation of the onahole that I was feeling for the first time, she was completely immersed in the sense of superiority that she was feeling for the first time.

    “Oppa. You can spurt whenever you want. I’ll squeeze out everything until your handsome cock turns cute.”

    Squish, squish, squish, squish!

    Each time her hand, which tightly gripped the onahole, moved upward, it felt like my penis would be pulled out with it.

    Then, Yuna, who was next to me, looked at me and climbed on top of my lower body, and said while still busily moving the onahole.

    “Doing it like this makes it feel like I’m making you feel good with my vagina. Right?”

    “Y-yeah…!”

    “You’re so happy that you can’t even talk properly? Using an onahole is really fun. Let’s play with this from now on!”

    Her excited expression was as innocent as a child, but her breasts bouncing below were mature and extremely sexy.

    Before I could even leisurely appreciate them, the feeling of ejaculation rapidly rose.

    “Yuna, I’m going to cum again!”

    Whack, whack, whack, whack!

    As soon as she heard my words, her speed increased.

    Before long, my hips were shaking, and semen was scattered on Yuna’s face and body.

    “Kyaa! You came out a lot?”

    “Huff, I guess so….”

    After the shaking of my body subsided to some extent, I wiped the semen off Yuna with a tissue.

    The amount of semen was more than usual, but my penis was still energetic.

    Seeing this, Yuna wrapped her arms around my neck and clung to me.

    “Oppa… Now, put it inside me….”

    “Didn’t you say it was more fun with the onahole?”

    “Well, yes… but when I saw your semen, I wanted to feel good too.”

    Her innocent eyes were now filled with lust.

    No matter how stimulating the onahole was, I still preferred doing it directly with my girlfriend several times more.

    But instead of offering Yuna my hand, I picked up the onahole that she had put down.

    “Oppa?”

    “I felt good, so I’m going to keep doing it with this.”

    “Huh?!”

    Yuna’s eyes widened.

    There was no way she could have anticipated hearing such an answer from me.

    But since she had been joking around with me by treating me like a child, I was going to tease her in return.

    “Will you hold it and move it for me again? If you don’t want to, I’ll do it myself.”

    “Don’t do that, do it with me. I want to feel it too.”

    “I want to too, but it’s so good that I don’t think I can.”

    “Huh?! What are you talking about! Doing it with a person is much better than a tool!”

    “Is that so…?”

    Yuna nodded vigorously at my lukewarm response.

    “Of course! You know that too! Right?”

    “I don’t know.”

    I pretended to be clueless and refilled the onahole with lubricant.

    Soon, my penis was plunging into the onahole again.

    “Ooh. It’s good as expected.”

    “Ah, Oppa! Don’t do that, do it with me!”

    “Yuna, can you go over there for a second?”

    I said that and deliberately moved the onahole.

    Of course, I didn’t intend to go all the way to ejaculation like this, so I moved it slowly.

    “No! Put it in me instead of the onahole, okay? You like my vagina, don’t you!”

    Becoming desperate, she took off all her remaining clothes, turned around, and spread her vulva open with her own hands.

    “It’s wet and easy to eat right now, right? I’m completely excited, so I’m going to squeeze you so much, right? Are you still not going to put it in?!”

    I barely managed to hold back the laughter that was about to burst out at the sight of her sincerely competing with the onahole.

    “Sorry, Yuna. I think I’ve become a body that can’t do without an onahole now.”

    “Tch… Alright.”

    She pouted her lips and turned around.

    She went straight to the sofa and threw herself face down on it.

    ‘…Is she sulking?’

    I was planning to tease her a little more, but I guess I should stop here.

    I put down the onahole and went to the sofa and called out to her, who was lying naked.

    “Yuna.”

    “Don’t talk to me.”

    “Are you sulking?”

    “…I’m an onahole right now, so I won’t answer.”

    “Huh?”

    “….”

    I only realized the situation after a moment of silence.

    Because I said I couldn’t do without an onahole, she’s pretending to be an onahole?

    It was an absurd and ridiculous action, but it only looked like a cute pout to me.

    “Yuna, are you an onahole now?”

    “…Yes.”

    A very short and clear answer.

    Strictly speaking, it was closer to a realistic doll than an onahole, but if I picked on that, she would really sulk, so I had to let it go.

    I deliberately pretended to be seeing Yuna on the sofa for the first time and said playfully.

    “Ooh, what is this onahole?”

    “….”

    “It looks much prettier than mine. Can I use it?”

    “….Yes.”

    “Huh? The onahole is answering? Oh, is it not an onahole?”

    “….”

    She answered without realizing it and then went silent again.

    “I wanted to masturbate anyway, so I should use this a little.”

    I wondered how long Yuna would be able to maintain her act.

    To solve that curiosity directly, I reached out to Yuna’s body, which was lying face down.

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