Namgoong Serin was in a bad mood.
‘…’
Back when she left her family to reunite with Geunhyeop, her heart was racing.
In fact, there had been a lot of twists and turns before she finally mustered the courage to say she would leave for training. Leaving home alone was something she never imagined, so it felt like her first outing, and she was excessively excited.
When she finally reunited with Geunhyeop, her joy was explosive. The thought of training together was simply delightful.
But then…
An unexpected meddler appeared.
That annoying Mosan Sect female sorceress, Fiery Lotus. She wasn’t someone she wanted to meet, but surprisingly, she showed up with Geunhyeop.
How did they even meet?
They looked way too close.
Maybe even closer than with herself.
On top of that, that Wi Hayoung was blatantly flirting with Geunhyeop. She was practically throwing herself at him, using every seduction trick in the book.
‘Ugh.’
It made her angry.
To Namgoong Serin, Geunhyeop was the savior of Gumyung Ji-eun, a close friend, and a disciple. Naturally, she felt it was only right for her to garner his full attention, yet his mind was occupied by Wi Hayoung.
‘…He’s clearly lost his marbles.’
Indeed, Geunhyeop was in a daze.
Look here, he was staring intently at Wi Hayoung’s back as she climbed the mountain. Pretending not to look but failing miserably, he couldn’t fool Namgoong Serin.
Moreover, with his flushed face, it was clear he was deeply troubled.
‘Whether she’s showing off or is completely oblivious, it infuriates me to see that seductive sorceress tempting my disciple.’
Namgoong Serin sighed, glaring at Geunhyeop.
Even now, he was drooling over Wi Hayoung’s behind like a complete fool.
‘*sigh* I can’t believe he’s falling for such a trivial trick. But okay, I get it. It’s said that men lose their minds at just a glimpse of a woman’s attire.’
Resolute, Namgoong Serin looked at her own outfit.
‘In this martial arts attire, I can’t…’
The martial arts uniform she wore was the same one from their last dungeon expedition—completely covered up. Unlike Wi Hayoung, who was revealing more than half of herself, there was no comparison.
‘In this outfit, I can’t compete with that shameless woman. Thankfully, I brought a spare set of clothes.’
Namgoong Serin had been waiting to reunite with Geunhyeop and had packed several outfits, drawing from her experience of teaching him martial arts the last time.
There were various types of female martial arts uniforms. She even packed an eye-catching one meant for mischievous female martial artists, perhaps even one more daring than that.
‘I should find an opportunity to change. Then Geunhyeop won’t be able to take his eyes off me. Heh heh.’
Namgoong Serin thought so, until they reached the river and Wi Hayoung started throwing her clothes off.
* * *
I could only stand there with my mouth agape.
Serin tossed her martial arts uniform right in front of me.
Her uniform was noticeably different from Hayoung’s revealing outfit, taking time to take off. As a result, I could directly witness Serin shedding her clothes one piece at a time.
As the thick belt fell away, her top loosened, and when she moved her arms to take it off, it revealed… her underwear. In other words, her bra showed up.
Then, Serin started unfastening the side of her skirt that rose halfway up her waist. Just like that, the thong I had seen before was revealed.
“…”
Her pristine skin.
Partially covered by a mere flimsy piece of fabric.
Serin’s sensual and alluring figure was fully exposed. That bra-like garment supported her ample chest well, while the small strip of fabric left her hips and butt fully visible.
“This indecency! Where are you looking?”
That cold gaze!
“No, I mean!”
“You’ve gotten entranced by your master in her underwear? Geunhyeop, you really are lustful.”
“I-I saw nothing!”
I immediately covered my face.
“Hehe, it’s fine. As I said, I need to swim, so I’m just changing. It can’t be helped, right? No need to hide your face.”
“But!”
“Besides, we are friends before we are master and disciple. So it’s alright. Come on, Geunhyeop, take off your clothes too! I think it will be nice to swim together and cool off.”
With that, Serin approached me.
—Swoosh.
Her soft touch grazed my skin. I was incredibly tense, and my arousal was rising. The sight of her flawless skin filled my vision, accompanied by a lovely fragrance that made my head spin.
It was too hard to accept the reality that two women in front of me were now in nothing but their undergarments. No matter how much they were friends and master, this was too much!
“Come on, take it off! Do you plan to ignore your master?”
“But if I take it off right now…!”
Because mine was way too stiff right now!
If I took it off, it would be a disaster!
“I’m the one who took my clothes off, so what’s there to be embarrassed about? We’re just swimming, so why… Aah!”
—Splish!
At that moment, a splash of water hit us.
“What are you doing? If you’re coming in, hurry up!”
Hayoung splashed water at us!
“Geez! Are you kidding me? Geunhyeop! Hurry up and take off your clothes!”
“Wait a moment!”
Though I resisted, Serin ignored me and helped with undressing. I awkwardly tried to remove my pants without exposing myself.
“Hey!”
Kneeling, Serin suddenly grabbed the waistband of my pants and pulled them down!
As a result, my vigorous member was…!
“Ugh!”
“…Ah.”
Thanks to Serin being on her knees, the situation turned rather awkward… She paused for a moment.
“So, so this is why you hesitated to undress.”
“Yeah… this is why…”
I couldn’t lift my head.
“I don’t know much, but I’ve heard it’s normal for a man to act like this. So there’s no need to be embarrassed.”
Serin awkwardly encouraged me, but this shame was beyond help.
“Besides, I’m your master, right? It doesn’t matter if I see this kind of thing.”
“Thanks… I’ll just get into the water now.”
“Yes.”
In this state, it was better to dive into the water.
“Kyaah!”
I immediately threw myself toward the river.
—Splash!
What a refreshing sensation!
“Ah!”
“What took you so long? Aah, kyaah!”
—Splash!
Just as Hayoung approached me, Serin splashed down right beside me, sending a wave of water towards Hayoung’s mouth. The sight of her sputtering was adorable.
—Swish!
Emerging from the water, Serin shook her hair. If there were such a thing as a mermaid princess, this would be it. I quickly wiped any images of a black mermaid princess from my mind.
“Ah, this feels nice. A cool river like this really refreshes my spirit.”
“Cough cough! What are you doing? Why did you have to plop down right next to me?”
“You were the one who splashed water first, right?”
“This is…!”
But as soon as we got in the water, they started bickering again?
“Hmph! I’m the one with the broader mind, so I should let it go, I suppose!”
At that moment, Hayoung smirked and grasped herself, emphasizing her chest.
“Ugh!”
That made the part with the talismans rise above the water’s surface…!
Wait, isn’t the center part sticking out too?
“W-What are you doing? Hide that immediately!”
“I’m just showing off my confidence, okay? You chilly? Want me to warm you up?”
“Warming up, huh?!”
As Hayoung approached to press her chest against me, Serin pulled me close to protect me.
“Stay away!”
Consequently, I buried my nose between Serin’s cleavage.
“Ulp!”
I couldn’t breathe…!
“Why are you being so indecent? Isn’t Geunhyeop feeling awkward?!”
“I don’t think so? Do you have any idea how much he enjoys this?”
“Oh, is that so? Then I should check for myself.”
What is she going to check?!
“Geunhyeop, do you really find this enjoyable? Huh?”
“I-I mean, I do, but I can’t breathe!”
“Oh dear, my mistake.”
Serin released me.
“Guys, stop fighting and just swim. What’s with you always bickering?”
I felt like a kind of fighting tool stuck between two quarrelsome women. Though I received several benefits from it, friends should not fight among themselves.
“It’s not fighting!”
“We’re not exactly fighting. So then, let’s swim. I’ve never swum in a river with friends before, so I’m really excited.”
As Serin said that, her face flushed slightly.
She looked so pretty.
“Serin, do you know how to swim?”
“I haven’t really done it before.”
“In that case, I guess I’ll have to teach you.”
“Really? Hehe, I’m looking forward to it.”
Though Serin was my master, that didn’t mean I couldn’t teach her. I’m pretty decent at swimming myself.
“Heh, can’t swim? Girl and boy bodies are different. I’ll show you how.”
“You say you’ll teach me.”
“Look!”
—Splash!
Hayoung started swimming.
But then…
“Wow!”
Hayoung, a woman with a very voluptuous body, was currently in nothing but her talismans. Watching her move her arms and legs freely in the water was truly breathtaking.
Her big chest bobbed around, and her firm thighs moved as she exposed her middle part covered only by the talisman.
“What do you think? Am I a good swimmer?”
Even though she was just swimming, it looked extremely sexy. Of course, Hayoung had no awareness of this as she swam around me.
But I couldn’t just watch.
If I got caught, I’d hear more nonsense from Serin about being indecent.
“Why is Hayoung so good at swimming! Anyway, Serin! I’ll show you how to swim!”
“Uh, uh. Yes. Teach me.”
As I extended my hand, Serin took it.
“Okay, now lift your feet and kick just like Hayoung.”
“Like this?”
Serin started kicking while I pulled her along slowly backward.
“What are you doing? I wanted to swim together, but you’re just teaching her the Jade Flower Sword. How boring!”
“Hehe, come on. I’ll teach Serin how to swim, then we can all swim together! She’s a martial arts master, so she’ll catch on quickly!”
“Isn’t it okay to let go now?”
Her posture looks good, but…
“Serin, I’m letting go, so try moving your arms!”
“I don’t think it’ll be too hard.”
The moment I let go…
—Splash!
Serin began moving her arms as she swam freestyle.
“Whoa!”
She must really be a martial arts master! Even though she said she had never swum before, her body naturally caught on immediately.
“Nice job!”
“That was easier than I thought. Geunhyeop, can you catch up to me?”
With a playful challenge, Serin picked up speed.
“Alright!”
I chased after Serin.
“Whoa!”
Setting aside everything else, I was decent at swimming. I moved my arms and legs to keep up with Serin.
But she was way too fast, wasn’t she?
I couldn’t catch up!
“Ha ha ha! What are you doing! You’re so slow! Why are you so bad at swimming?!”
“This can’t be happening…!”
Just then, Hayoung briefly swam alongside me, zooming ahead to match up with Serin. All I could do was chase after the behinds of the two half-naked women.
“I can’t believe I’m losing in a swim!”
Especially to Serin, who had just learned…!
Is this the difference in talent?!
“Ah!”
At that moment, Serin screamed.
“Serin! What’s wrong?!”
I noticed that she had stopped swimming.
“What’s up?”
“Th-That…”
“What is it?”
“My underwear is floating away. Over there.”
“Huh?”
Looking where Serin pointed…
“…”
A white piece of fabric was drifting away.
A moment of silence.
“I’ll go pick it up. Don’t move.”
“W-What do you mean pick it up? You pervert!”
“I have to get it!”
I dove straight for the floating fabric, swimming diligently to catch the elusive item.
But…
“This is…?”
It was way too small.
Wasn’t it even smaller than Hayoung’s talisman? It was shaped like a little triangle, barely covering anything!
“What are you doing standing there? Hurry and grab it!”
“Ugh, ugh.”
Hayoung was yelling from a distance.
Serin looked embarrassed, lowering her head.
“…could I dive under and see?”
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