Chapter 11: The Center of the Lower Body
The moment I stepped through the door, the hand that locked it behind me was trembling with urgency. The sharp click of the metal latch echoed unnaturally loud in the quiet apartment. Choi Yunjin barely managed to stay on her feet, her chest heaving as she fought the urge to collapse right there. Her heart was pounding erratically. Ever since that night in the private room with Baek Donghyuk over the weekend... I hadn't been able to calm down even a little.
I tossed the shoulder bag carelessly onto the floor and headed straight for the closet. Normally, I'd have changed into comfortable loungewear, but not today. I grabbed whatever was at hand, pulled my hat low over my head, stuffed my wallet into my pocket, and headed back to the front door. My destination was clear. My steps felt faster and more hurried than usual.
Why is my body trembling like this...
The place I arrived at was a women's lingerie store. Soft lighting and elegant decor surrounded me, with racks of colorful lace and silk underwear on display mannequins filling my vision. Normally, I wouldn't have given them a second glance. They were just pretty things I'd pass by. To Choi Yunjin, underwear was just a functional necessity—worn under her uniform, easy to move in, leaving no marks on her body, practical was best. She usually ordered based on fabric quality from the internet, since there was no one to show off to.
But things were different now. Baek Donghyuk touched them, even took them off. He said the impression of the person could change depending on the clothes they wore, and the influence of underwear was even greater. Had he thought her overly practical and functional designs lacked femininity? A wave of unnecessary shame washed over her.
"Welcome, customer. What kind are you looking for?"
Startled by the gentle voice, she looked up. A store employee in a neat uniform approached with a smile. Choi Yunjin was momentarily at a loss for words. What kind? What should she say? Just comfortable? Or something pretty? She had no experience with this sort of thing.
"Um, what do men like... in underwear?"
The words slipped out, and she realized her mistake. Her face burned hot. The employee looked surprised for a moment, eyes widening, but quickly recovered with a professional smile.
"Men's tastes are quite varied, you know. If you could tell me even a little about what style your boyfriend prefers, I could recommend something easily."
"Ah, th-that..."
The word "boyfriend" made her heart drop. Is Baek oppa my boyfriend? Are we dating?
She was confused. The encounter had started under the name "study session." It was conducted under the guise of treatment. Secret additional practice in the meeting room. In the private room over the weekend... truly, things that were beyond imagination had happened.
There had been no clear exchange of words saying they liked each other or were dating. But recalling Baek Donghyuk's persistent caresses and her own complete acceptance of them, it seemed like their relationship had long since gone beyond ordinary. Maybe he was just bad at expressing himself. Or... was it all her imagination? If it was just testing a new treatment method through a woman's body, then coming to the lingerie store to worry about his preferences right now would be unbearably pathetic.
Her mind was a tangled mess. The employee continued to wait with a soft smile for Choi Yunjin's answer. She couldn't hesitate any longer.
"Um... this one, please."
Choi Yunjin's finger pointed to the most flamboyant mannequin in the center of the store.
***
Saturday morning.
Ding dong.
At the sound of the doorbell, Baek Donghyuk stopped what he was doing and checked the intercom screen. Beyond the screen was the owner of the weekend study session promise, Choi Yunjin. For some reason, her atmosphere felt different from usual. Baek Donghyuk opened the door without much thought.
The moment the door opened, what caught his eye was Choi Yunjin's appearance, which had changed noticeably. Her long hair, usually draped over her shoulders, had today become a lush, natural wave perm. And the light makeup added a subtle vitality to her youthful face.
Her clothing was also different from usual. A red knit that fit her body appropriately, paired with a flowing long skirt. It exuded mature feminine charm. It was as if she had come to the salon specifically for today, from head to toe, everything was taken care of.
"Come in, Yunjin-ah. You came on time."
"U-um... yes. Because it's an important appointment..."
Choi Yunjin entered the house with a face full of tension, greeting awkwardly. She wandered around the small one-room apartment and sat on the edge of the sofa. The sight was strangely cute. After staring for a moment, she prepared two cups of warm tea. As she handed them over, she naturally sat beside her.
"I never imagined I'd see you at home."
"That's... oppa said that applying it in reality is more helpful than just learning theory. I... it feels good to loosen tight muscles."
Her hand holding the teacup was slightly trembling. The tension was evident. To break the awkward silence, Choi Yunjin started rambling about small daily stories from the hospital lately. Who made a mistake, a new intern had come, what did they think, not very nutritious stories.
Baek Donghyuk occasionally chimed in, listening to her stories. His gaze naturally swept over Choi Yunjin's lips, the slightly exposed collarbone, and the contours of the breasts rising prominently under the knit. The memories from last week's private room and hospital treatment room were vivid. The tempting breasts, the movements, the moans.
Before long, Choi Yunjin's stories had petered out, and the teacups were empty. Baek Donghyuk took the empty cups and set them aside on the table. And very naturally, he slid his hand up under her knit.
"Yunjin's breasts feel too soft to the touch, and it's pleasurable every time I touch them."
"U-um... there... curtain."
"Ah, I forgot. Wait a sec."
Her gaze was directed out the window. Baek Donghyuk realized his mistake. The curtains, which he usually didn't care about whether the sun was shining or raining, were now a problem.
Baek Donghyuk stood up and went to the window. This was the first time he'd invited a woman to his house. The sight of him closing the curtains at home felt strangely new. After taking a deep breath, he returned to the sofa. When he did, Choi Yunjin was still sitting with her head bowed.
Baek Donghyuk stood in front of her. Without hesitation, he grabbed the hem of her knit and lifted it up. Her white skin and slim waist were revealed, and finally, the full breasts in a bra were laid out before him. Baek Donghyuk's hand, which had been about to unhook the bra from behind with familiar movements, hesitated for a moment.
...Eh?
She was wearing underwear that was completely different from what he expected. A deep wine-colored base with black lace hugging the areolas tightly, the deep cleavage accentuating the breasts even more. It was beyond lewd, openly provocative.
"Oppa... why, why... this, it's weird..."
In Choi Yunjin's eyes was a mix of anxiety, shyness, and a hint of expectation.
"Last time, that underwear suited you better."
"Eh, eh..."
"I think simple designs look prettier on you. Ah, sorry. I was just saying my thoughts... If I made you uncomfortable, I'll apologize."
Choi Yunjin stared blankly for a moment, at a loss for words, then shook her head.
"...It's fine."
It was a possible answer because she knew who she was being evaluated by. Rather than praising her for wearing a mature outfit that didn't suit her just to waste time every time they met, it was better. Baek Donghyuk quickly unhooked the bra and threw it to the floor. Since she was undressed, her attention shifted to other things.
"Look at these tempting breasts. Yunjin is most beautiful when she's naked."
"W-what kind of joke is that."
"My hands are a bit large, yet they can't even hold them all at once."
Without finishing his words, Baek Donghyuk grabbed her breasts again with both hands. The fullness that one hand couldn't handle was overflowing even more, filling his palm. Using his thumb and other fingers, he began to knead the soft flesh like dough, slowly.
"Huuu... O, oppa... ah..."
The moan that burst from Choi Yunjin's mouth was much more intense than before. Tilting her head back slightly, her neck trembled as she breathed heavily. Baek Donghyuk ignored it and continued to knead her breasts more persistently.
The qi is slightly decreasing.
It seemed like the qi sent into her body wasn't accumulating infinitely. Baek Donghyuk felt like he was replenishing and refining the amount of qi discharged outside. To check how sensitive it had become, he pinched the tip of her nipple and pulled.
"Kyaah! A, aaa... if you do that to there..."
"The breasts seem sufficient, so let's loosen the muscles in the lower body today. Like last time, lie down prone."
"Eh, where..."
"Recently, there have been more patients complaining of pain in the buttocks and thighs."
Choi Yunjin, whose body had stiffened with tension, was gently turned and made to lie prone. The most neutral spot where pain was felt, without information on which point. Chronic pain that anyone in a job that involves a lot of movement might have. Baek Donghyuk injected qi into the expected point based on his own experience.
S-success...
At the same time as Choi Yunjin's waist swayed excessively, a red dot appeared in the center of her thigh.