Life inside Beom Seok’s mansion was gilded but suffocating. Koo woke up every morning in silk sheets, surrounded by luxury, yet each day felt like the same copy of the last. Endless hallways of marble, maids fluttering around her, chefs preparing elaborate meals she barely touched—yet no freedom.

Her husband had given her everything, except air.

She would scroll through her phone for hours, half-naked on the couch in one of her tiny slip dresses, bored out of her mind. Yes, there was a gym inside the mansion—bigger than most professional ones. But working out alone, in silence, while being watched by bodyguards wasn’t thrilling. What she craved was the feeling of being among people, the little spark of being seen, admired, desired.

So one night, while Beom Seok lounged in bed with his belly spilling over the sheets, Koo slipped into his arms and pouted. She pressed her soft pink lips to his cheek, brushing her fingers across his chest.

“Oppa…” she whispered in that spoiled, sweet tone he adored.

Beom Seok turned his head, already softening. “Mm? What do you want now, my doll?”

“I want to go to a real gym outside… not just the one at home. I feel so locked in here all the time.” She gave him her famous puppy eyes, the pouty lips that could melt anyone. “Please? Just to breathe a little, oppa. You know I’ll only go after you leave for work. No one will bother me…”

He stared at her, torn. He hated the thought of anyone’s eyes on her. But when she giggled, kissed his fat cheek, and whispered, “I’ll be a good girl,” his resolve crumbled.

“Fine,” he sighed, trying to act strict, though his cock twitched under the sheets just from her kisses. “Only mornings. Only after I leave. And don’t you dare wear something too slutty—”

Before he could finish, Koo squealed with delight, straddling his belly, kissing his face all over. “Thank you, oppa! You’re the best!”

He melted completely.

The next morning, as soon as Beom Seok left in his limousine for the day, Koo sprang into action. She slipped into her most flattering gym outfit: a tiny sports bra that struggled to contain her big breasts, and skin-tight leggings hugging the curve of her ass so perfectly that it looked painted on. Her flat stomach gleamed, her long hair tied back in a playful ponytail. She looked more like she was dressing to seduce than to sweat.

Sliding on sunglasses, she grabbed her husband’s black card and her car keys. For the first time in ages, she drove herself—windows down, music blasting—smiling like a girl sneaking out for mischief.

When she pulled up at the city’s most prestigious gym, heads turned instantly. Cameras nearly lifted, but everyone knew who she was: Koo, the star who had married into billions.

The manager himself hurried out to greet her, flustered, bowing slightly. “Mrs. Beom Seok? W–what an honor. Please, come in. We’ll make sure you’re perfectly comfortable, no disturbances, maximum privacy.”

Koo flashed him her perfect smile. “I’d like to join here. I’ll come every morning, after my husband leaves for work.”

He almost fainted with relief. “Of course, madam. We’ll arrange everything.” Then, nervously: “Would you like a private instructor? Someone to guide your workouts?”

Koo tilted her head, lips curving mischievously. “Mmm… sure. That sounds fun.”

The manager immediately waved someone over. “Taehyung! Our best.”

And then he appeared.

Tae.

Tall, broad, muscled, his black tank top stretched across his chest, veins running down his forearms. Sweat glistened faintly on his skin from his previous session. His jawline was sharp, his eyes deep, and when he saw her, even he froze for a second.

Koo’s breath caught. He wasn’t just handsome—he was dangerous. Young, vibrant, the complete opposite of her husband.

Taehyung stepped forward, bowing slightly but never taking his eyes off her. His voice was low, smooth. “It’s an honor. I’m… actually a fan of yours, Ms. Koo. I’ve watched your movies.”

Her cheeks warmed for the first time in years. She tucked a strand of hair behind her ear, pretending to be casual, but her heart skipped. “Really? That’s sweet. Thank you.”

Their eyes lingered a moment too long before the manager cleared his throat.

“Well then, Taehyung will be your personal instructor from now on. He’ll take care of your routines, your privacy, everything.”

“Perfect,” Koo said, smiling directly at Tae.

They talked about her schedule—every morning, after Beom Seok left. Tae explained his training methods, though his eyes kept flicking down to her cleavage, the way her leggings hugged her curves. Koo caught it, and instead of being offended, she smirked faintly. She liked it.

When it came time to pay, Koo casually pulled out her husband’s black card, sliding it across the counter. “Put everything on this,” she said, not even glancing at the amount.

Everyone in the gym whispered behind her, starstruck, as she walked away with Taehyung at her side, her ass swaying like it was hypnotizing him.

And for the first time in years, Koo felt alive.