The clinic’s staff changing room was a sanctuary of sorts—a private space where the women who worked here could transition from their everyday selves into the professional roles they assumed during working hours. Yurin stood before her locker, her fingers deftly unbuttoning her blouse, the fabric sliding from her shoulders to reveal the marks that decorated her skin like a roadmap of pleasure.

She hadn’t realized how many there were until she saw herself in the full-length mirror. Her neck was a canvas of dark hickeys, some fresh and angry, others fading into bruises that would take days to disappear. Her shoulders bore the imprint of teeth marks, her breasts had small love bites near the nipples, and even her thighs showed evidence of Joon-ho’s possessiveness—finger marks where he had gripped her, small bites where he had tasted her skin.

The night at the penthouse had been transformative in more ways than one. Yurin felt different—more confident, more aware of her own body, more accepting of her desires. But seeing the physical evidence of everything they had done made her flush with a mixture of embarrassment and undeniable arousal.

Behind her, the locker door clicked shut, and Yurin turned to find Soo-jin leaning against the row of lockers, her eyes fixed on Yurin’s exposed skin with undisguised appreciation.

"Look at you." Soo-jin’s voice was warm with amusement, her lips curving into a knowing smile. "You’ve been thoroughly claimed, haven’t you?"

Yurin felt her cheeks heat, but she didn’t try to cover herself. There was no point, after all. Soo-jin had seen her in various states of undress before, and there was no hiding the evidence of what had happened.

"It was a... intense night." Yurin admitted, her fingers moving to the hem of her skirt.

"I’ll say." Soo-jin pushed away from the lockers, approaching with deliberate steps. "Joon-ho didn’t hold back, did he? You’re covered in marks from neck to thigh. I’m surprised you can even walk properly today."

"I can walk just fine." Yurin protested, though her voice lacked conviction. "And it’s not like I didn’t enjoy every minute of it."

"Of course you did." Soo-jin reached her, her hands coming to rest on Yurin’s waist from behind, her body pressing close. "That’s the best part, isn’t it? Being wanted so thoroughly that he can’t help but mark you as his."

Before Yurin could respond, Soo-jin’s hands slid upward, cupping her breasts from behind. Her touch was confident, experienced, her fingers finding the-sensitive spots with practiced ease. Yurin gasped as Soo-jin’s thumbs brushed over her nipples, which were still tender from the night before, sending jolts of pleasure straight to her core.

"You’re sensitive today." Soo-jin observed, her breath warm against Yurin’s ear. "I can feel it. Every touch makes you jump."

"I’m always sensitive." Yurin replied, though her voice was breathless. "Especially after a night like that."

Soo-jin’s fingers continued their exploration, teasing and pinching, drawing soft moans from Yurin’s lips despite her efforts to maintain composure. The sensation of being touched from behind, of not being able to see what was coming, of feeling Soo-jin’s body pressing against her back—it was all incredibly arousing.

And then Yurin felt something else—something cold and hard pressing against her spine through the thin fabric of her camisole. Metal. Cool, unyielding, unmistakably metal.

"What is that?" She asked, her voice trembling slightly.

"You’ll see." Soo-jin’s lips brushed her earlobe, her teeth nipping gently. "But first, let’s talk about these marks. You must have had quite the night to end up looking like this. Joon-ho really made sure everyone would know you belong to him."

Yurin’s flush deepened, but she didn’t pull away. "It was... different. Intense. He made me feel things I’ve never felt before."

"Like what?" Soo-jin’s hands continued their exploration, her fingers tracing the love bites on Yurin’s breasts, her touch alternating between gentle caresses and firmer pinches that made Yurin gasp.

"Like I was completely his." Yurin admitted, her voice barely above a whisper. "Like nothing else mattered but being with him, pleasing him, feeling him inside me. I’ve never experienced that kind of surrender before."

Soo-jin’s response was to press her body closer, her breasts molding against Yurin’s back, the cold metal pressing more firmly into her spine. "And how did it feel? Surrendering like that?"

"Freeing." Yurin’s eyes closed, her head falling back against Soo-jin’s shoulder. "I didn’t have to think, didn’t have to worry about anything but the pleasure. He took control, and I let him. And it felt... right."

"Good." Soo-jin’s lips found her neck, pressing kisses to the marks that Joon-ho had left, her tongue tracing the sensitive skin. "That’s exactly how it should feel when you surrender to someone worthy of your trust. Joon-ho is that kind of man."

Her hands moved from Yurin’s breasts down to her waist, her fingers hooking into the waistband of her skirt, but before she could go further, Yurin reached back, slapping Soo-jin’s hands away with a playful swat.

"Enough teasing." Yurin turned to face her, her cheeks flushed, her eyes bright with arousal and frustration. "You’re enjoying this too much."

"Can you blame me?" Soo-jin’s grin was unrepentant. "You look incredibly sexy like this—covered in marks, your skin flushed, your body responding to every touch. It’s hard to resist."

"Then don’t resist." Yurin’s voice dropped, becoming more serious. "Tell me about you. What have you been up to? I haven’t seen you since before the weekend."

Soo-jin’s expression shifted from playful to something more thoughtful. "I had an interesting weekend myself. Su-bin took me to a club—somewhere special, somewhere private."

"Your mistress?" Yurin raised an eyebrow. "You still see her outside of work?"

"We live together." Soo-jin corrected, her tone making it clear this was the most natural arrangement in the world. "One unit, just the two of us. She’s my partner, my lover, my mistress in every sense of the word. We don’t just ’see each other’—we share a life."

Yurin blinked, processing this new information. She had known Soo-jin was involved with someone, but the extent of their commitment hadn’t been clear until now.

"That’s... serious." Yurin observed carefully.