The silence inside the SUV was a physical weight, pressing the oxygen out of the cabin.

Claire Reyes stared at the leather-wrapped dashboard. Her fingers traced the ghost of a white mark on her wrist where Adrian had clamped his frozen fingers hours before.

"A biological necessity," she whispered.

As a high-achieving psychology student, her first instinct was to activate the defense mechanisms of her mind—she had to use logic to deconstruct this absurdity. She looked at Killian, her fingers tapping rhythmically against her knee as if she were assessing a difficult clinical case.

"If I view all of this as an evolutionary biological function, does it make sense?" Claire's voice was chillingly calm, tinged with a streak of self-deprecation. "Killian, is your so-called 'Mate Bond' essentially a biological necessity? Or, to be more scientific—a catalyst that allows your beast-like nervous system, which is on the verge of collapse, to return to a 'stable frequency'?"

She looked up, her gaze clear and cold enough to cut. "To you, am I Claire, or am I a functional 'stabilizer'? Are you fixated on me because you love me, or because you need me to keep you from going completely feral and tearing through the villages and streets?"

Killian was stunned by this sudden, cold logic. He watched those eyes that were trying to dissect the truth with academic rigor, and a helpless, bitter smile tugged at the corner of his lips.

"Your rationality always manages to pierce into the softest places," Killian said in a low voice. "But Claire, biology cannot explain the way a soul, once torn apart, is stitched back together. If I only needed a stabilizer, there are countless chemical drugs or meditative techniques available to me. But the longing I have for you is born from the tremors in every single bone of my body."

She let out a dry, breathy laugh that caught in her throat.

"Does it last, Killian? Or does the... the frequency eventually decay? Do you just find another anchor when this one stops working?"

Killian turned his massive frame toward her. The movement was fluid, displacing the heat in the car. The amber in his eyes was gone, replaced by a dark, exhausted brown that looked like crushed earth.

He slowly reached out, not touching her, but hovering his hand in the air between them. "A fated mate is both the curse and the salvation innate to a werewolf. It isn't a question of how long it lasts, but the fact that from the very second I met you, my life has physically completed a symbiosis with yours."

Claire looked at his sincere gaze, and the wall in her heart named "Reason" wavered once again. She suppressed the agitation in her chest and changed the subject; she needed to confirm another shadow that unsettled her.

"Since you are the Alpha, what about Adrian?" she asked, looking him straight in the eye. "There seems to be some kind of... deep-seated hatred between you guys. Why is he always targeting you? Or rather, what is the history between you two?"

The tenderness in Killian's eyes was instantly eclipsed by a cold, dark red. He scoffed, his voice filled with an innate disdain.

"Adrian? He's a vampire, Claire," Killian leaned back, a bloodthirsty curve touching his lips. "Adrian is a vampire. He and his kind are the most elegant parasites in this world."

Claire's pupils constricted. "A vampire? I knew it..." That explained why Adrian could identify Killian's nature in an instant.

"Adrian is an echo of the Laurent bloodline. They fancy themselves... the architects of logic. The silent rulers. We fought a war once. The Black Vein War. Long before Chicago was ever built with steel and glass."

He looked through the windshield at the concrete pillars of the garage.

"They slaughtered my pack's elders while they slept. We razed their libraries to the ground. A thousand-year-old blood feud is already carved into our genes," Killian explained, his tone growing sinister.

"Werewolves revere strength and land, while vampires rely on camouflage and manipulation. They once tried to control our territory by infiltrating the government and academia. Adrian's approach to you wasn't just because of his so-called 'admiration'; it's because he wants to use you to break my defensive lines. He likes to watch me struggle inside the cage of rules."

Claire was silent. She realized that, without knowing it, she had become the center of a game played by these two ancient powers. An unprecedented sense of crisis spread through her, but at the same time, she felt a sliver of relief—she was no longer a piece blindly toyed with; she had gained a measure of "candor."

"Since you are mortal enemies," Claire lowered her voice, asking the final question, "is that Suture lurking in the shadows, the one creating experiments and threatening the school—is that your common enemy?"

Killian's expression turned graver than she had ever seen. He turned, looking through the car window toward the deep, cavernous underground parking garage, as if something unspeakable were hidden in that abyss.

"No, Claire," Killian's voice was as cold as ice. "That is not a common enemy. That is an insult to us both."

"They are genetic rejects, Claire. Mixed-breed experiments. Things that shouldn't exist."

"They harvest Lycanthrope marrow and Vampire venom. They stitch it together into a... a biological mess."

"They use humans," she whispered, remembering the text from the library. "As filters."

He reached out then, his thumb finally brushing the line of her jaw with a terrifying, fractured tenderness. "They smelled the Alpha's mark on you. They think if they break you..."

"I won't let them, Claire. I will burn every grid in this city until the air is nothing but their ash."

"Then don't keep me in the dark ever again," she whispered. "I need to... I need to know you, Killian. All of it."

Killian froze. His wolf hummed, a low, satisfied vibration that filled the marrow of his bones.

"Leon," Killian said into the silence of the cabin.

"Sir," Leon's voice crackled through the encrypted speakers.

"Deploy the twelve. We're moving the perimeter to the North Shore facility."

"Understood, Alpha. The path is cleared."

Killian shifted the SUV into gear. The tires shrieked against the concrete as he accelerated toward the ramp.

"Where are we going?" Claire asked, her pulse hitting her collarbone like a hammer.

Killian didn't look back at the city.

"To the only place where I don't have to pretend to be a man," he whispered.