Taming the Obsessive Attachment

“His name… I heard it was Major Mateo. Affiliated with the 7th Special Task Force. His ability is defense-type. It seemed to be the kind that generates protective shields, and he told me that I’m a mutant Guide… and that my rank is… S-rank, I think.”

“Ah, haha, that bastard? I know who he is. Of course, Jae-jin, your rank is S-rank. So? So what happened next…?”

“Yes. And, um.”

Jae-jin hesitated for a moment.

Should I… say this too?

“I think I… did some Guiding.”

“What?”

“He touched my lips and tongue.”

“…….”

Seo Eui-woo’s aura turned dark and menacing.

The anxious, boyish figure that had clung to Kwon Jae-jin right after the coordinate shift, restless like a twenty-year-old should be, vanished without a trace. In an instant, he transformed into a fierce predator.

His gaze was like a blade forged from ice—sharp and frigid.

Rather than outright anger… No, rather than outright murderous intent, it seemed like he was restraining himself, trying to hold it back, trying not to unleash it on Kwon Jae-jin. But that very restraint made him look even more terrifying.

Even though the bathroom lights were blazing bright in every direction, it felt as if a thick darkness had settled around Seo Eui-woo.

“…Ha.”

Seo Eui-woo slowly twisted the corner of his lips.

His voice sank low, lazily drawling as he swallowed down the violent emotions surging inside him.

“You did… Guiding?”

Kwon Jae-jin hadn’t done anything wrong, yet he felt as if he had committed a crime.

“…Yes. A little.”

“How was it?”

“…What?”

“Explain it. In detail. Accurately. Because I think I need to know everything.”

Jae-jin’s expression darkened slightly.

“I mean, even if you ask me to explain… That’s all there is. He touched my lips and tongue.”

“…Yeah, explanation won’t be enough.”

Seo Eui-woo lowered his voice further, suppressing his rage, and whispered softly.

“Show me. Do it to me.”

“…What?”

“That bastard touched your lips and tongue. How did he do it? How much? Recreate it exactly on me. You can do that, right?”

“…….”

“Go on. Do it. Hmm?”

Seo Eui-woo slowly took Jae-jin’s wet wrist and pulled him closer—close enough for their faces to nearly touch. Then, he pressed Jae-jin’s palm against his lips.

“Like this… Did he touch you like this?”

Beneath long, glass-like shimmering lashes, his gray irises gleamed fiercely as they cornered Jae-jin in silence.

“With his palm? Or… with his fingers?”

“No, more like…”

“What’s wrong? You don’t hide things from me, Jae-jin. That’s not the kind of relationship we have, is it?”

With his lips still pressed against Jae-jin’s palm, Seo Eui-woo barely restrained his killing intent as he let out a low growl.

His burning gaze was fixated on Jae-jin’s slightly parted lips and the tongue hidden within. It was as if he wouldn’t be able to rest until he uncovered every detail of how Major Mateo had touched them, from beginning to end.

“Show me everything. Now.”

“Well… That is… Haah.”

It had been a long time since Jae-jin had felt this at a loss for words.

He opened his mouth slightly, then closed it again, his fingertips trembling ever so slightly in Seo Eui-woo’s grasp.

This was bewildering.

To reenact exactly what Major Mateo had done…? Jae-jin glanced down at Seo Eui-woo’s throat. If he really were to replicate it perfectly, he would have to start by strangling him.

“Alright. First, I’ll do this to your neck…”

Using his free hand—the one not held by Seo Eui-woo—Jae-jin hesitantly reached for his throat. Slowly, he wrapped his fingers around the elegant curve of Seo Eui-woo’s neck, just as Major Mateo had done to him.

“He choked me… demanding I confess who had hidden me in the Special Residential District.”

“Wow, that bastard even choked you?”

“Not too hard. Just for a moment.”

“Even if it was just for a moment… Jae-jin, you hate being choked. That’s why I never do it and always make sure to be careful… but this…”

Jae-jin blinked and then tightened his grip slightly. He squeezed Seo Eui-woo’s neck just a little harder, attempting to perfectly recreate Major Mateo’s threat.

“And then, after choking me, he moved his hand here… and asked, ‘Was that Guiding? How could Guiding be like this?’”

Jae-jin released his grip from Seo Eui-woo’s throat and slowly slid his hand upward along the elegant curve of his neck. Spreading his fingers wide, he pressed his palm against Seo Eui-woo’s jaw, rubbing against his lips.

“He covered my mouth like this… and when I turned my head to avoid him, he shoved his fingers into my mouth, like this…”

Jae-jin parted Seo Eui-woo’s lips and slid two fingers inside. Beyond his neat row of teeth, he could feel the soft texture of his tongue.

Hot, wet, and smooth…

As Jae-jin gently pressed down on Seo Eui-woo’s tongue with his fingers, he was shocked by how incredibly pleasant it felt. It was enough to make his heart pound.

“Shhuuhhffhh?”

With Jae-jin’s fingers still in his mouth, Seo Eui-woo mumbled.

His words were slurred, but the intensity of his burning, lethal gaze remained unchanged, making the contrast unsettlingly terrifying.

“Shhuuhhffhh, how?”

He kept urging him on. Jae-jin stopped moving his fingers, rolling through his memory to recall what happened next.

“I… bit Major Mateo’s fingers.”

“Mm?”

“So then, after that…”

Jae-jin grabbed Seo Eui-woo’s tongue. Pinching it between his thumb and index finger, he pulled it out, forcing it past his parted lips.

“He pulled my tongue out of my mouth… like this.”

Seo Eui-woo’s red tongue, held captive by Jae-jin’s fingers, stretched beyond his lips.

It was just a reenactment of what Major Mateo had done, yet seeing Seo Eui-woo obediently sticking out his tongue at his command sent an unexpected thrill through Jae-jin’s chest. His heart pounded fiercely.

The sight of Seo Eui-woo’s furious face with his tongue lewdly exposed felt perversely indecent. His flushed, slick tongue was so soft, so wet…

Jae-jin couldn’t tear his gaze away.

The fact that he was holding Seo Eui-woo’s neat, disciplined tongue like this… That he could do whatever he wanted with it… It was exhilarating in a way that caught him completely off guard.

When Mateo had done this to him, it had been nothing but disgusting and repulsive. But now that he was doing the same thing to Seo Eui-woo… it felt… different.

Dangerously so.

As if he was getting aroused.

Like he had some kind of… deviant fetish.

“…Sweet, mm.”

“……”

“He said… it was sweet.”

Jae-jin, as if entranced, touched Seo Eui-woo’s tongue. The slick warmth made him shiver slightly, and thick saliva clung to his fingers. He rubbed against it a little longer, unwilling to let go, but eventually, he withdrew his hand with reluctant hesitation.

“After that… I kicked Major Mateo. That was the end of it.”

“Ah, really… I see.”

Seo Eui-woo slowly lowered his head.

Jae-jin had thought that doing everything Seo Eui-woo asked would finally help him calm down, but instead, it seemed to have set him ablaze even more.

Seo Eui-woo’s gaze trembled faintly. He sucked in a sharp breath, his smile twisting. Though he bit down on his teeth and forced a soft expression, his icy, glinting eyes were downright chilling.

“I should’ve killed him on the spot. Seriously…”

“What?”

“It was my mistake. I was too focused on you, Jae-jin—I didn’t even notice he was there… If I had been more careful, I would have sensed him and used my ability to tear him apart. No, if I had just left work a little earlier… If I had found out a day sooner that the security system was broken—”

“No, Seo Eui-woo. Please calm down. It’s already happened. It’s over now.”

“This is me trying my best to stay calm.”

Seo Eui-woo curved his long eyes into a soft smile.

He was smiling. He had been smiling this entire time. And yet, just looking at that face made Jae-jin’s throat go dry.

“I want to go rip that bastard Mateo to fucking pieces right this second, but I can’t. Because I can’t leave you alone in this broken-security house.”

“…Killing him is not an option. Major Mateo didn’t do anything deserving of death. I was just unlucky to be discovered—he’s an innocent man.”

“You think I don’t know that?”

Seo Eui-woo let out a short, mirthless laugh. “I know, but still… I swear, even if I burn his hands to a crisp and tear them apart to feed to wild dogs, I don’t think my rage will settle…”

He raked a rough hand through his disheveled black hair, pushing it back past his forehead. Then, after exhaling a sharp, ragged breath, he reached out and cupped Jae-jin’s face with his wet hands.

Desperation laced his touch.

He stroked Jae-jin’s cheek, then trailed downward to his shoulders, his chest—grasping and releasing—then further down, over his arms, his waist, his legs. Every inch of him was feverishly, obsessively mapped.

Then, Seo Eui-woo pulled Jae-jin into his lap, pressing their lower bodies flush together.

“Guiding with you… Your lips, your tongue, the way I choke you—until now, I was the only person in the entire world who knew what that was like. Just me. Only me.”

His voice trembled as he let out a breathless laugh.

“And now… someone else has invaded my Jae-jin…”

“Seo Eui-woo…”