Seeing my older sister’s reaction like that made me feel strangely awkward.

    It seemed like she thought so too.

    “Should we watch porn together?”

    “Isn’t it a bit weird for a guy and a girl to watch porn together…?”

    “What’s weird? Couples watch it often.”

    “We’re not a couple though.”

    “True, you’re a couple with Mom. Lady Cha In-gyeong.”

    “That’s not true…!”

    People always try to be quiet, but when they talk, their voices naturally get louder.

    “And lower your voice.”

    “No!”

    It was a mistake to trust Yerin noona.

    As expected, she raised her voice loudly as if resisting or teasing me.

    “Mom’s gonna wake up!”

    “Okay, okay. *Puhut*.”

    Ha… they say you shouldn’t take in black-haired animals.

    “You were thinking something weird just now, weren’t you?”

    “I wasn’t.”

    First of all, if we play until late at night, we’ll oversleep,

    and if that happens, Mom might find out.

    That I brought a girl home when she’s not even my girlfriend.

    And it wouldn’t be good if she found out that the person is Yerin noona, who’s having a war of nerves with Mom.

    “Go to bed early.”

    “Why? I came to hang out for once, let’s do something.”

    “There’s nothing to do at dawn.”

    “Really? You’re surprisingly innocent?”

    “Surprisingly?”

    “I’m surprised that you’re innocent after having sex with Mom.”

    “That was because of the sentence!”

    “Sigh, never mind. I’m going to sleep.”

    Yerin noona goes to my bed, lifts the blanket, and lies down.

    “The bed….”

    “Why? You want me to sleep on the floor? A woman?”

    “No. Sleep on the bed.”

    “Hmph.”

    I decided to stay up doing computer work to get Yerin noona out of the house early in the morning.

    I wanted to post on the sentencing bulletin board for the first time in a while.

    Yerin noona, who knows my bulletin board nickname, is sleeping.

    Hehe, now is the perfect opportunity.

    [Some girl I have a ‘some’ with is sleeping in my bed lol ah]

    Writer: Kim Seon-go

    So tired because I’m so popular ㅋㅋ

    ㅇㅇ: Sleeping with Mom?

    ㄴKim Seon-go: ㄴㄴ She’s someone I have a ‘some’ with ㅋㅋ

    The reason why I post under the nickname ‘Kim Seon-go’ is because of my identity.

    I have to write with this somewhat famous nickname for it to taste good, should I say?

    Anyway, that’s how it is.

    “Am I someone you have a ‘some’ with?”

    “W-what! You weren’t sleeping?”

    “I was under the blanket using my phone?”

    “… Seriously.”

    Yerin noona said, slightly lifting the blanket.

    “Hey, come in and sleep.”

    “… What, no way.”

    “Last chance. Come in.”

    Honestly… honestly, I was curious.

    What it feels like to sleep in the same bed as a girl.

    You’re not going to do anything, are you?

    It’s okay, Kim Ji-won!

    “I’m just covering myself with the blanket because it’s cold. Don’t misunderstand.”

    “Okay~ come on in.”

    In the end, I shared a blanket with Yerin noona.

    I felt something very… strange.

    First of all, my bed size is single.

    So it’s already a bit cramped to use alone, but using it with two people made me feel like we were really close.

    No, we were actually stuck together.

    “*Kikik*.”

    Noona was smiling while looking at her phone.

    I could see Noona’s face reflected in the phone in detail.

    Big eyes, deep double eyelids, flawless skin… Honestly, she was pretty.

    “*Kikikik*.”

    But she keeps laughing strangely.

    What’s so funny?

    “*Kikikik*.”

    I didn’t want to bother, so I was just looking around the sentencing bulletin board.

    Then a post caught my eye.

    [I’m Kim Seon-go’s girlfriend.]

    Writer: Real Woman

    ‘What is this…?’

    First of all, the nickname is ‘Real Woman’. It was that nickname I talked to a few times before.

    That person who said they wouldn’t even share a table with someone who’s single.

    I clicked on the post to check it out.

    [I’m Kim Seon-go’s girlfriend.]

    Writer: Real Woman

    Kim Seon-go is lying next to me

    Attachment: proof.

    ㅇㅇ: Kim Seon-go, what is that, he’s kinda handsome?

    123.740: Taking selfies and saying you have a girlfriend, faking it lol ㅋㅋ

    “W-what!”

    “*Puhahahahaha!*”

    Yerin noona burst out laughing.

    Now that I see it, the nickname ‘Real Woman’ was Yerin noona.

    “Are you kidding me? You can’t just upload other people’s photos on the internet like that!”

    “Ah, delete it quickly!”

    “I don’t want to?”

    She’s so damn annoying.

    “You’re dead!”

    I put Yerin noona in a headlock.

    “Ugh—!! It hurts!”

    “Delete it! Delete it quickly!”

    “Aaaagh—!”

    Everyone on the bulletin board knows that I got sentenced with Mom.

    I have to get her to delete the photo.

    “Jiwon-ah? Why is it so noisy?”

    “Shhh.”

    Mom woke up.

    Fortunately, Yerin noona was as quiet as a mouse now.

    “Mom, can I come in?”

    “Yes, Mom.”

    Mom opened the door.

    Yerin noona was hiding under the blanket.

    “Who are you with?”

    “No one. I woke up from a nightmare….”

    “Really?”

    At that moment, I suddenly felt a strange sensation.

    Right in my crotch.

    Yerin noona, or rather, this bitch, is doing something under the blanket.

    “Uheoeot….”

    “Huh? Are you hurting somewhere, Jiwon-ah?”

    Even if it’s awkward, Mom was still Mom.

    She wanted to check on me.

    “No. I think I just had a cramp in my leg.”

    “Should Mom take a look?”

    “No, I’m okay. It’s okay now.”

    “Should I massage your legs a little… if, if it’s okay….”

    At that moment, I felt something beyond the strange sensation in my crotch…

    A ‘sucking feeling’.

    Damn it… what are you doing?

    “*Uheoheot*… No… *Hihit*! I’m okay.”

    “… It seems serious?”

    Mom came closer and tried to lift the blanket.

    “Let me move the blanket.”

    “No! I’m telling you I’m okay!”

    I shouted without realizing it.

    I did it because I was a little frustrated, and Mom looked hurt.

    “Are you… uncomfortable…? Mom’s sorry.”

    “N-no, that’s not it… I’m really okay….”

    “….”

    Mom left my room, and I reflexively threw off the blanket.

    “What are you doing…!”

    *Tchup*, *tchup*…

    Yerin noona was buried in my center.

    That sight was… unbelievable.

    It was the first time in my life that a woman’s mouth had covered my penis.

    “Huh…?”

    “I’ll make you feel good ♥︎”

    “D-don’t… *Heueueu*….”

    It was hard to express.

    A sensation like licking nerves directly, not skin.

    “Do you know vacuum fellatio?”

    “S-stop it….”

    I could feel my face getting hotter and hotter.

    My fingertips lost strength, and my thighs cramped.

    “*Eueueeup*…!”

    The sensation rising through the vas deferens.

    My head went blank, and my heart was beating next to my ears.

    “You can cum comfortably.”

    “N-no way…!”

    “Cum in my mouth.”

    In the end, I pushed her head down and pulled my penis out.

    Because of the pressure, there was a wet *jjueop* sound.

    “Why? Don’t you like it?”

    “N-no… it’s not that…”

    “Then, how about this?”

    Yerin noona pushed my penis down, made my balls clearly visible, and kissed them.

    Her lips and tongue brushed against my balls, and my whole body flinched as if electrocuted.

    “Haa, haat… Haaaeung…”

    “Good, right? Just accept it. How is it? You like the feeling of my lips touching you, right?”

    “Heueueuk…!”

    It was then. I heard Mom’s voice from beyond the door.

    “Jiwon-ah…? Is something wrong?”

    The moment Mom turned the doorknob, the blanket was too far away.

    Fortunately, Yerin noona quickly pulled the blanket over my body.

    Right then, the door opened.

    “I keep having nightmares today… haha…”

    “I definitely heard someone talking just now.”

    *Jjuahap*—

    “Heueup ♥︎”

    “Huh? What’s wrong?”

    “N-nothing at alloot ♥︎”

    “Hmm…?”

    At that moment, an unbearable stimulation rushed in, and I ejaculated.

    Even right in front of Mom…!

    Secretly with another woman…

    Guilt and strange pleasure washed over me at the same time, and my whole body trembled.

    And still, Yerin noona’s lips were holding my penis.

    She even seemed to be slowly sucking up the remaining semen.

    “Heueeung… I think I should sleeep…”

    “… Okay.”

    Mom seemed to think it was strange, but fortunately, she didn’t press me any further.

    Mom went out again, and I was speechless.

    Now that I’ve already ejaculated, what’s the point of arguing….

    “Huh? It’s hard again.”

    Yerin noona kept playing with my penis, and it got erect again.

    “… Stop it now.”

    “It’s just beginning?”

    Noona took off the blanket and came on top of me.

    Her pants are gone?

    “Wh-what are you doing…?”

    “I’m going to dip it in and take it out.”

    “W-wait a minute…!”

    At that moment, Mom’s face came to mind.

    I felt like I shouldn’t sleep with another woman.

    It felt like I was mocking Mom… ignoring Mom.

    “Really not okay. Please.”

    Yerin noona was in a horse-riding position. Her hand was holding my penis.

    It was a position where my penis would go in if she sat down even a little.

    She said quietly.

    “Is it because of Mom?”

    “… Just.”

    “Say it clearly.”

    “Yeah.”

    I thought she would stop, but she put the entrance of her vulva slightly on my glans.

    “Even like this?”

    Honestly, my penis felt like it was screaming that it wanted to go in.

    Because I’m a man.

    Honestly, it wasn’t easy to hold back in this state.

    I even thought that I wanted to lift my hips and put it in myself.

    “It’ll be warm.”

    “… *Keueup*.”

    “It’s so soft too.”

    “… *Eueut*.”

    I have to hold back.

    “For your information, I have a crazy amount of vaginal folds.”

    “Wh-what are you saying….”

    “Don’t you want to feel the internal bumps of my vagina, like a pile of herring roe?”

    I almost got convinced and put it in.

    “… No way.”

    “Isn’t younger me better than an old woman? Look at your penis touching my vulva, it suits me.”

    “Don’t….”

    “….”

    In the end, she gave up.

    “I’m going to sleep.”

    What?

    She seemed a bit sulky.

    She turned her back and didn’t show any reaction.

    “Slee…ping?”

    She doesn’t answer.

    I was still immersed in the afterglow of the night before sex.

    Should I have put it in?

    I was a little bit sad, but honestly, I felt bad about sinning against Mom.

    Then, Noona, who I thought was sleeping, said one more thing.

    “Unexpected.”

    “Huh?”

    Yerin noona left those words behind and seemed to have really fallen asleep.

    “Ha… I’m really tired.”

    I feel languid….

    I could see my penis glistening with Noona’s saliva.

    “….”

    That day, I stayed up all night.

    Because I didn’t know when Mom would come in.

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