The Trainer Sisters
Two days after having sex with Se-a, I'd come to one painfully clear realization.
"My back is killing me..."
My body was extremely weak.
Se-a always said she could barely last through it, but I was struggling just as much. A full day had already passed, and my entire body still ached with muscle soreness.
"That's why you should've... you know, taken it a little easier."
Se-a said this from the driver's seat, her tone extremely cautious — she clearly felt guilty about it herself. I glanced over at her. Unlike me, she looked perfectly fine. Probably thanks to working out every day — even though she'd been whining that her body couldn't take it at the time, she'd recovered in no time.
"That's because you weren't moving. I was the one doing all the work for over an hour. Just me."
"...I'm really sorry."
"My arms are still tingling."
Even when she'd been on top of me, she couldn't lift her hips properly, so I'd ended up grabbing her ass and doing the thrusting myself. That's why my arms hurt on top of my back.
"But are you sure this is okay? The training facility is exclusive to Escort Officers, but the gym isn't."
Even while driving, she shot me a worried look, her brow furrowed.
"It's fine. You'll be with me, right?"
"Well, yeah..."
"Then there's no problem. I trust you'll protect me."
Se-a reluctantly conceded. Still, the corners of her mouth lifted slightly when I said I trusted her.
She's so pretty.
I looked at her for a moment, then turned to gaze out the window. Our destination was coming into view in the distance.
That's a huge building.
We were currently heading to the gym — the one attached to the Escort Officer training facility she'd mentioned during our walk last time. We'd already called ahead to let them know I was coming. Showing up unannounced would throw them into chaos, and we'd have a harder time dealing with any unexpected situations ourselves. She'd told me you always had to give notice when visiting a facility used by a lot of people.
I hope I'm not being a nuisance.
I didn't have to do anything, but Se-a had to contact the facility, and the facility had to make preparations on their end. Carrying a faint sense of unease, we arrived at the gym.
The building's parking garage had a special reserved section. We parked there and got in the elevator.
"What kind of gym goes up to eight floors?"
I asked as she pressed the button for the top floor.
"The entire building is a fitness center."
She explained this while wrapping her arms around me from behind.
"It's run by a famous Hunter Trainer. Besides the gym, there's an Escort Officer-exclusive training facility, a Pilates studio, a yoga center, and more."
She pointed to each floor of the elevator panel as she explained. The whole building really was packed with fitness facilities.
Pilates and yoga, huh... That means they'll be wearing tight, form-fitting clothes.
My interest suddenly surged. Unlike weightlifting, they'd be bending and stretching their bodies every which way, emphasizing their chests and asses. Legs splitting open with flexibility. No underwear underneath, so everything would be on full display...
"We're here, Dan-woo!"
"Huh? Oh, yeah."
While I was inflating that fantasy, the elevator arrived at the eighth floor. Se-a and I stepped out, and the words "New Fit" glowed on the wall across from us.
To the right was nothing but the hallway to the restrooms. To the left were the front desk and the gym entrance. Beyond the entrance, the gym featured recessed lighting paired with track lights, a modern atmosphere of black and white in perfect harmony. They'd clearly put a lot of work into the design — it looked incredibly sleek.
"This is really nice. It looks like a café."
"These days they say the interior design is just as important as the equipment."
"True. There's even a saying now that design matters more than performance."
I agreed with her as we walked toward the front desk. Two women emerged from the back.
The woman standing on the left had purple-tinged gray hair cut in a bob that reached about mid-neck. She wore a blue-gray tank top and light purple leggings that left her panty lines clearly visible. The woman on the right had the same hair color, but her long hair was gathered into a rounded bun at the back. She wore a reddish-pink tank top and light purple leggings that, instead of panty lines, clearly showed the cleft of her ass.
Both of their tank tops were loose, the necklines and armholes cut so deep that the slightest movement threatened to expose a nipple. They weren't even wearing bras — the distinct shadows of their nipples were already visible through the thin fabric.
Suddenly I felt someone's gaze. I looked up to find the woman on the right watching me with a sly smile.
...She caught me.
Even if the world changed — even if that world reversed the genders — women were still sensitive about being stared at. Or maybe I'd been looking too obviously. I'd like to believe that wasn't the case.
"You actually came?"
Se-a raised her voice in surprise, as if she knew them. The two women looking at me turned their attention to her.
"You said Dan-woo was coming."
"And besides, Se-a, we gotta boost your energy a little!"
The woman on the right gave a thumbs-up and a wink. Even that slight movement made her breasts bounce.
"Noona, you know them?"
"Ah, let me introduce you. The one on the left is the owner of this gym, and the one on the right is the owner of the fitness and yoga center downstairs. They've been looking after me since I first started training to become an Escort Officer."
Se-a had said she started working out to become an Escort Officer back when she was a student, so this was a pretty long relationship. At her introduction, the two women walked right up to me.
"I'm Kim Seo-yeon, owner of New Fit."
"I'm Kim Seo-ha, owner of New Body! And since I'm already the owner, I also happen to own the building!"
They were sisters, apparently. No wonder their faces looked alike. The older sister, Seo-yeon — the one on the left — had a calm personality, while the younger sister, Seo-ha — the one on the right — was energetic.
Their chests were as different as their personalities. Seo-yeon's ended in a modest curve, while Seo-ha's breasts were so large that even the slightest movement sent them rolling in big waves. I wasn't sure I could even hold them with both hands.
"Is being the building owner that important? If it were me, I'd introduce myself as a Hunter Trainer."
"Hmm? Then that too!"
Seo-ha really did have an incredibly bright personality. Hunter Trainers, though... Did that mean they were Hunters too?
"No. They have the qualifications to professionally train Hunters, but they aren't Hunters themselves."
"That's impressive, right?"
"Extremely. It's almost unheard of for a non-Hunter to become a Hunter Trainer."
From what I gathered, the two of them were famous enough to appear on TV fairly often. Earning Hunter Trainer certifications as non-Hunters was part of it, but the real reason they'd become famous was something else entirely: their skills far surpassed those of other Hunter Trainers, and they had the results to prove it.
None of the Hunters they'd trained had become S-Class yet, but plenty had reached A-Class. There was even a joke that every solo A-Class Hunter had passed through the sisters' hands at least once.
"Considering how rare S-Class Hunters are to begin with, you could pretty much call them number one among Hunter Trainers."
That was why they appeared on TV as expert commentators, got invited as guest lecturers at the Academy, and even received requests from major guilds to coach their affiliated Hunters. They were living incredibly busy lives. And people like that had been waiting here just because I was coming.
"Please don't worry about it. We're doing this because if anything happened at our facility, it would be a huge problem."
Seo-yeon said this in a voice that carried almost no emotion.
So I really was a nuisance for coming to a regular gym as a man?
Just as the worries I'd been carrying started to creep back up, Seo-ha raised her voice.
"Come on, unnie. After you were singing about how badly you wanted to see Dan-woo?"
"You...! Why would you say that?!"
Seo-yeon's composure completely crumbled at her sister's confession. She flushed red and glared at her younger sibling. Se-a, who'd been watching the two of them with a frosty look, grabbed my arm and pulled me into the gym.
"Let's go, Dan-woo."
"Uh, yeah."
As we were passing them by—
"Oh? Dan-woo, you've got something on your shoulder!"
Seo-ha suddenly brushed my shoulder with her hand, leaning her face in close. She pressed her face to my ear and whispered quietly.
"If you want to touch them, go ahead anytime. My breasts."
I flinched in shock and stepped back. The extra distance let me get a good look at her face — a face overflowing with mischief.
"Hehe!"
A cool, refreshing plant-like scent drifted from her. It was the complete opposite of her image.
"It looks great on you. That's my Dan-woo."
When I came out of the locker room after changing into the athletic wear they'd prepared in advance, Se-a was waiting for me. She praised me the moment she saw me, but she looked even better. She was wearing a pale yellow sports bra and leggings, with a white cropped sweatshirt that came up just above her chest.
The sweatshirt on top meant there wasn't much actual skin showing, but the sliver of her chest visible in the gap between the sports bra and the sweatshirt somehow looked even sexier than usual.
"The trainers are waiting over there."
I looked where she was pointing and saw the two of them waving from a room enclosed in floor-to-ceiling glass. Five steps created a height difference that gave the space a sense of isolation from the rest of the gym.
"Are you staying here? Or going to the training facility?"
"I'll stay here. So don't worry."
I wasn't worried. The women around us glanced at me now and then, but none of them looked like they were about to jump me.
Still, knowing she'll be here is reassuring.
Whether Se-a was around or not made a huge difference mentally. She smoothed down my messy hair and headed toward the weight zone. I went straight to the room where the two women were waiting.
Inside, there were only yoga mats and foam rollers. Judging by the pile stacked in one corner, this space had been set up specifically for that kind of use.
"Let me introduce myself again. I'm Kim Seo-yeon, and I'll be helping you with weightlifting and building your stamina."
"And I'm Kim Seo-ha, here to work on your flexibility and body balance! Nice to meet you!"
"Yoon Dan-woo. Nice to meet you too, uh... Teacher?"
I didn't know what to call them, so I went with "Teacher" the way Se-a had. Seo-yeon smiled faintly.
"You can call us whatever you like. Seo-yeon, Trainer Seo-yeon, or even Seo-yeon noona is fine."
The gap when a normally expressionless woman smiled was incredible. That's the kind of smile it was. Seo-ha, standing next to her, nodded vigorously.
"Then I'll call you noona normally, and Trainer when we're working out."
"I like that! You're exactly like Se-a always bragged about, Dan-woo!"
"Bragged? Ah, more importantly, please just call me Dan-woo too."
Why was Seo-ha so energetic? She bounced with every word she said, which meant her breasts never stopped shaking. I couldn't help it — my eyes went to her chest.
"Like I said earlier, you can touch them whenever you want, okay?"
Seo-ha said this while casually lifting her breasts from below.
"Ah, no! I'm fine."
I waved both hands in refusal at her boldness. I'd never met a woman this aggressive before, and it was extremely flustering.
"Seo-ha, that's sexual harassment. I'm sorry, Dan-woo."
Seo-yeon smacked her sister's arm and apologized to me. Seo-ha rubbed the spot she'd been hit but kept smiling, so she was probably used to getting scolded.
"It's fine. I don't think of it that way."
"See? Dan-woo doesn't care about that stuff. He probably likes it, actually."
This woman watches my stream, doesn't she? There's no way she'd act like this toward a man she'd just met otherwise.
"Ah! Before we start working out, how about the three of us do a cheer together? You know, to get pumped up!"
"That sounds great!"
It felt a little like she was forcibly changing the subject, but it was a good suggestion. Little things like this closed the distance and helped people get closer.
How were we going to do this? I looked at Seo-yeon and Seo-ha, and the two of them positioned themselves with me in the middle. Seo-yeon, circling around behind me, seemed to have a flushed face...
"What is it? How are we doing this...?"
I asked, glancing back and forth with a growing sense of unease.
"Well, you see..."
Seo-ha grinned as our eyes met.
"Like this!"
She shouted and charged at me with her arms outstretched. It wasn't a full sprint — more of a light, bouncy run — which meant her breasts were bouncing wildly. They swung in every direction inside her loose tank top, and one of them slipped slightly out.
I took in that overwhelming sight and instinctively stepped backward. It was a reflex, but I hadn't even taken a full step before something soft pressed against the back of my head. Before I could even turn around to check, Seo-ha shoved her breasts into my face from the front.
"We're gonna work hard starting today!"
"I-I'll teach you with everything I've got...!"
So it was Seo-yeon behind me after all. That meant the soft thing against the back of my head was her chest? She'd looked small, but there was definitely something there. And it was pretty soft, too.
But from the front, a heavy weight and a violent softness filled my entire face. And within that cool plant-like scent, a faint, naughty hint of sweat slipped into my nostrils and stole my mind away.
My first experience with huge breasts was incredible.