………….

    “You know, Jiyeon-ssi…. We decided to swap partners during our trip. You knew that, right…?”

    ………….

    The tableware on the table was subtly trembling. Was it because the train tracks weren’t smooth, or were my pupils shaking?

    My throat kept feeling parched, so I picked up the glass of water. Jiyeon looked at me but didn’t say anything particular.

    Of course, there was no such agreement.

    I had unilaterally brought Jiyeon here.

    It was all my fault. My fault for not being able to suppress the urge to see another side of Jiyeon.

    Hajunseo didn’t seem to be particularly interested in Jiyeon. Rather, he showed the appearance of a polite boyfriend, like serving salad to Min Serin.

    As the wait gradually lengthened, Min Serin adjusted her posture. As if she had expected that we hadn’t talked about anything, she picked up her knife again and began to cut her steak.

    “……It seems the conversation didn’t go well, but please finish your meal first—.”

    “――I knew.”

    ………I was flustered without realizing it. There’s no way she could have known.

    Min Serin’s hand, which was about to bring the meat to her mouth, stopped in mid-air. She read my expression at once and nodded.

    I had never agreed with Jiyeon beforehand, and she didn’t even know that Min Serin and I had secretly exchanged DMs.

    “No… actually, I don’t know anything. It’s just so sudden, isn’t it? Such a luxurious train trip.”

    After saying that, Jiyeon looked at the fading sunset. The dim twilight calmly enveloped her fair face.

    Suddenly, there was a flickering notification near her shoulder. It was a notification only I could see in this world, an update signal for 《Character Information》.

    “So, can I go talk to Doyun for a moment?”

    “Of course. I’ll be waiting~.”

    ………….

    I followed Jiyeon, who had stood up first, back to the cabin. As soon as the door closed, I apologized to Jiyeon and opened my mouth to explain.

    Jiyeon said there was no need for that.

    “It’s not like I had no idea. Those people, aren’t they the ones I met on the SNS account I sold? And somehow, after talking, we ended up here.”

    “Yeah…. Actually, they’re people who commented on our photos, and the woman contacted me saying she knew me.”

    “Really? How?”

    “She’s a hotelier who works at Midnight, and it seems she saw me the day I stayed at the hotel.”

    “She knows who you are just from that? That’s surprising. …And then?”

    “And then…? Ah, um… and after that……”

    Min Serin asked to exchange her photos with Jiyeon’s photos. Before I could even refuse, the other person’s resident registration card photo was received.

    Thinking that Jiyeon’s publicly available photos would be fine, I sent the uploaded photo. Then, Min Serin sent a more explicit photo.

    “Let’s see… It’s a swimsuit photo, isn’t it? As for you secretly exchanging DMs with her… I’ll set that aside for now. So, what did you do?”

    “I, I also sent your swimsuit photo…”

    “This… is a photo I took a long time ago, and you had it? *Pfft*, is this woman flirting with you right now? Saying she’s wet down there…? A little… vulgar.”

    I was showing Jiyeon the DM history, but she didn’t try to scroll herself. She told me to scroll past Min Serin’s nude photo that appeared next, as if uninterested.

    While doing so, she frowned as if she had seen something she shouldn’t have, then took the phone.

    “Ha― hahaha, wait a minute. What is this…? This is absurd. Isn’t this my photo?”

    “Well… suddenly a photo like that…”

    “Ugh… disgusting. Who would want to ejaculate on someone else’s girlfriend’s photo…? Right?”

    “Huh…?”

    “Even if someone does this, it doesn’t change me, does it? No matter how much others masturbate to my naked photos all day long… I’m still by your side. But… they did cum quite a lot…”

    *Glance.*

    Jiyeon’s gaze briefly rested on my crotch. Though she didn’t speak, she might have been comparing me to him. At that moment, blood began to rush to my penis.

    “This too… is my underwear. If you wanted to masturbate, you could have just told me. I could have given you a handjob.”

    “Sorry… But I did put it straight into the washing machine.”

    “Why?”

    “Why… you ask? Because it got dirty, so I have to wash it.”

    “I could even wear it like that. A pair of underwear soaked with your semen… I could even sleep wearing sticky, gooey underwear.”

    As she spoke, Jiyeon’s gaze had somehow become fixed on the phone screen. She was looking at a photo of her own underwear, so soaked with semen that it was barely recognizable.

    “……Hmph. Disgusting, truly. Was it Hajunseo-ssi? He’s annoyingly perverted.”

    The message content wasn’t over. After seeing Min Serin’s masturbation video, Jiyeon asked me if I was turned on. When I couldn’t answer, she came closer and asked in a low voice.

    “Tell me, Doyun-ah. Is Min Serin-ssi’s video more arousing… or is this photo, where they cummed all over my pussy picture, more arousing…?”

    Jiyeon’s photo was smeared with so much white fluid that it was dripping. She saved that photo on my phone and then directly sent it to herself.

    “Honestly… I don’t want to swap. I’m serious. Back then… I told you on the day we slept together, too. Right, but you secretly took photos of my underwear and me sleeping that very day and sent them, didn’t you?”

    When it was all revealed, even that I had intentionally sent photos of her underwear and the couple’s ring, I was pathetically leaking pre-cum continuously into my underwear.

    As if she had known, Jiyeon pulled down my pants and cupped my penis. I could feel semen rising from the root.

    “Listen carefully, Doyun-ah. From now on, do as I say. …Understood?”

    “Hngh… Ugh, yeah―.”

    “No kissing. No penetration. …No swapping for more than an hour. Record the play content as a video.”

    The moment she pressed the tip of my glans firmly with one hand, I threw my head back towards the ceiling and let out a groan.

    “What else might there be…? I’ll call you periodically. Just in case you try to have sex with that woman… it won’t do.”

    Jiyeon turned on her phone and began typing something with one hand. She was still gently stroking my penis, but her gaze was directed at the screen.

    “I’ve written down some precautions. Don’t ejaculate more than twice with that woman. You’re clearly sensitive… you’ll probably cum quickly. But endure. Once that time is over, I’ll let you cum freely inside me.”

    Aghhh―!!

    Suddenly, Jiyeon’s touch became more intense. Throwing her phone aside, she held my shaft with one hand and stroked down the base with the other.

    Her clean, unmanicured fingernails brushed past my plump, swollen testicles. When her index finger stimulated my anal opening, I trembled at the waist and finished cumming into Jiyeon’s hand.

    She said “good job” and sucked the semen from her hand with her mouth. I was slightly surprised by the sight, as if she were sucking a drink through a straw.

    “……*Gulp*. Feeling a bit calmer? I’ll be telling this to the other couple too. You absolutely must follow it. Absolutely―.”

    “Understood, Jiyeon-ah. Thank you.”

    “You’re my only boyfriend. It’s always been that way, and it always will be.”

    My love doesn’t change. As I’ve always said. Wiping her hands with a wet wipe, Jiyeon said that. We looked into each other’s eyes for a long time before finally getting up.

    ………….

    We conveyed our intentions to the ‘Senior looking out for junior’ couple. Fortunately, they accepted our conditions.

    “We were planning to slowly explore the facilities too. There’s no need to be too concerned.”

    “That’s right. If you feel like it later tonight, please contact us, *heheh*♡.”

    The meal was quite excellent. It was surprising enough to have a restaurant on the train, but tasting the luxurious dishes doubled our satisfaction.

    We decided to split up and have some private time. While I went to wash up in the shared bathroom, Jiyeon said she would rest in the cabin.

    I had just changed into comfortable clothes and was coming out when Jiyeon quickly walked down the corridor, closed the door, and entered. Wondering what was happening, I followed her, opened the door, and went in.

    Jiyeon seemed a little flustered, but she smiled brightly when she saw me and asked if I had finished washing.

    “Doyun-ah, should we go explore the facilities too? I hear there’s a lot of interesting stuff here. I heard there’s a bar in the lounge, and also a place at the end of the train designed for enjoying the scenery…”

    I looked around the train facilities with Jiyeon. Stars appeared one by one above the domed glass window. Even while drinking coffee and watching the night view, my composure would slightly waver whenever I looked at her face.

    In my mind, a gradually familiar image of her formed. Trying to take all of a man’s semen into her open mouth, but unable to handle the continuous cumming that filled her throat, choking back— .

    Ugh… I want to somehow relieve this feeling. I subtly placed my hand on Jiyeon’s back, who was sitting next to me.

    There was no one around. Thinking it might be okay to touch her now, I carelessly touched Jiyeon’s breast.

    “Ohhh―♡♡!”

    But her reaction was completely unexpected. Her nipples were already stiffly erect, and her rough, uncontrollable breaths were proof. For some reason, she was more aroused than I was.

    “St-stop… Why are you suddenly like this…? Let’s get up now. *Hah*………”

    While worrying about Jiyeon’s uncharacteristic reaction, I also felt an ominous sensation.

    Could it be that Jiyeon also wanted to swap? No, there’s no way. Even if she did, it wouldn’t be to this extent.

    “Are you okay? Your body feels… a bit hot.”

    “It’s nothing. I’m fine now, so…”

    As I was about to follow her, who had stood up first, I looked at the spot where Jiyeon had been sitting. A distinctly wet underwear line was clearly imprinted on the plush chair.

    I hurriedly tried to wipe it with my sleeve, but Jiyeon, seeing it, quickly stopped me.

    “Tissue… please bring me some tissue. I’ll wipe it.”

    Having no choice, I brought her tissue from the bathroom. In the meantime, Jiyeon’s complexion looked much better.

    She slightly twitched her shoulder as she carefully wiped the liquid off the chair. I couldn’t say anything to Jiyeon, but it looked like some white and yellowish liquid had also been smeared on the chair earlier.

    It looked sticky, like someone’s semen….

    Of course, I thought it couldn’t be, so I didn’t say anything…….

    ………….

    Come to think of it… Jiyeon was wearing safety shorts under her skirt today… So why was the underwear mark left on the chair…?

    What happened while I was briefly washing up…?

    ………….

    “Sorry… but I need to stop by the restroom. Go on ahead. …It’s nothing serious. Understood?”

    “At least tell me what’s wrong… Understood.”

    I didn’t go back to the cabin. Between her legs, as she entered the restroom, someone else’s semen, not mine, dripped down.

    That can’t be. Jiyeon wouldn’t do that. From the beginning, we agreed to prohibit sex with others…

    “Oh my…! Did you really go out like this? There really was no need for that… So all of this…?”

    “D-don’t say anything. People outside can hear.”

    “First, take this off… your pussy… I think you need to wash it well… *Hngh*………”

    Jiyeon wasn’t the only one in the restroom. For some reason, Min Serin had already entered the restroom, and soon after, a conversation began.

    Even though sounds were leaking out, I couldn’t understand exactly what they were talking about.

    “W-w-w-wait a minute!! You shouldn’t lick there―! *Hngh*………! *Haaht, haaht*, w-wait, I feel strange―!”

    “Gulp-chuuuuuuuuup♡♡♡, chuuub-eup… Haaah. You were so cute just now. What’s wrong with licking a bit? It’s my boyfriend’s anyway.”

    “Still, it’s dirty…”

    “This is the first time I’ve seen such a clean pussy in my life, you know? But how was Doyun-ssi’s reaction?”

    “Huh? There wasn’t really a reaction… because I got flustered first…”

    “Still, I’m sorry. Oppa likes that kind of thing. Even if it’s annoying to clean up… Huh? Is someone outside?”

    As soon as Min Serin finished speaking, the restroom door opened. I barely managed to hide behind a nearby wall, and soon the door closed again.

    I still couldn’t grasp what this was all about.

    Because the two seemed about to come out soon, I fled back to the cabin. Even after thinking it over, I still didn’t understand. Not Jiyeon’s sudden moans, nor Min Serin’s sounds as if she were intensely sucking something….

    Since it had come to this, there was no choice but to ask directly. When Jiyeon returns, I’ll ask her what conversation she had in the restroom.

    I needed to find out what happened while I was washing.

    *Knock… knock…….*

    It was then. Someone knocked from outside. If it were Jiyeon, she could just come in without knocking.

    “Come in, Jiyeon-ah. It’s not locked.”

    “Oh? Then I’ll come in~.”

    The voice didn’t belong to Jiyeon. The door slid open, and a woman in a white camisole and track pants entered the cabin. It was Min Serin.

    She, who had been smacking her lips as if she had just eaten something, smiled broadly at me.

    “…Shall we do it too?”

    ………….

    【New Hong Doha Illustration (The first one is off-season)】

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