The adrenaline crash severed Kaelen's control completely.
He didn't even feel his knees buckle. One second he was staring at the empty velvet pouch in his hand, and the next, his shoulder slammed hard against the rotting floorboards of the granary. The freezing canal water soaking his trousers finally reached his marrow. The Thermal Void anchored behind his sternum recognized the lack of resistance and aggressively devoured his remaining body heat.
Violent, uncontrollable shivers seized his spine. His jaw locked so hard his teeth threatened to crack. He curled inward, dragging his knees toward his chest, inhaling dust and freezing air.
Lyra Thorne crossed the room in three sharp strides.
She did not ask if he was alright. She dropped to her knees beside him and grabbed the lapels of his soaked, freezing coat. She hauled him upright, shoving him back against the wooden support beam.
"You grounded a localized cannon blast into the mud," Lyra said, her voice clipped and entirely pragmatic. "Your core is empty."
She unbuttoned the high collar of her riding coat. She didn't hesitate. Pulling his ruined collar aside, she pressed her bare right hand directly against the bruised, freezing skin over his heart.
The heat transfer was brutal. Lyra's Overheating Engine was running at a catastrophic high from the stress of the canal standoff. The collision of her boiling skin against his hypothermic flesh produced a sharp hiss. Steam rose off Kaelen's damp shirt.
Kaelen's back arched against the timber. A ragged groan tore through his bruised trachea. It felt like a live coal pressing into his ribs, but his biology aggressively demanded the fuel. He grabbed her wrist to hold her hand in place. His freezing, numb fingers clamped awkwardly over her pulse point.
Lyra gritted her teeth. The rapid drain on her internal engine forced her to lean closer, driving more of her weight against him to maintain the physical connection. The smell of freezing canal mud mixed with the scent of ozone radiating from her skin.
They stayed locked in the strained, uncomfortable position for two minutes.
Slowly, the violent tremors wracking Kaelen's shoulders faded. The ice in his veins melted into a heavy, dull ache. His heartbeat stabilized.
Lyra felt the shivering stop. She immediately pulled her hand back and stood up, wiping the dampness from her palm onto her coat. She took two steps back, putting practical distance between them.
"Your math is suicidal, Vane," Lyra stated. She adjusted her collar, trapping the remaining heat against her neck. "You survived Malakor. You survived the canal. And now you plan to walk into the Vane Estate completely unarmed."
Kaelen pushed himself off the floorboards. He tested his right leg, relying on the hardened marrow-paste inside his tibia to hold his weight. He flexed his raw, scraped hands.
"I am not walking in unarmed," Kaelen said. He picked up his soaked satchel. "I am just not carrying the weapon."
"Patriarch Vane stripped the ambient environment of usable Threads," Lyra reminded him, pacing the length of the dusty room. "He removed the glass conduits. If you step onto the grounds, you have no ammunition. You cannot simply squeeze the air and blow open a steel vault."
"I don't need ambient Threads." Kaelen leaned against the window frame, looking out at the winter fog rolling over the capital. "I need the building."
Lyra stopped pacing. She looked at him.
"House Vane is a sixty-room marble manor built on top of a First Era foundation," Kaelen explained. He kept his voice flat, mapping the architecture in his head. "They retrofitted it ten years ago with a modern Ministry heating grid to survive the mountain winters. Thousands of feet of heavy brass piping running through the walls, the floors, and the ceilings."
"Brass is not obsidian," Lyra countered. "It does not possess an infinite density capacity. If you force a kinetic Thread into a brass pipe, the metal won't hold the charge. It will rupture."
"I know."
Lyra stared at him as the tactical reality clicked into place.
"You want it to rupture," she said.
"I want to weaponize the plumbing," Kaelen confirmed. "The Patriarch saturated the estate in kinetic crush-wards to flatten intruders. But those wards project outward from the walls. They are anchored to the internal brass piping. If I reach the central boiler in the sub-basement, I can drag the massive thermal fire out of the furnace and convert it into a kinetic shockwave."
Kaelen pointed at the floorboards.
"I force the shockwave directly into the primary water main. The brass pipes carry the explosive pressure upward through the entire estate simultaneously. The pipes rupture inside the walls. The kinetic crush-wards shatter from the inside out."
Lyra processed the geometry of the break-in. It was ruthless. It bypassed the need for glass entirely by turning the enemy's own infrastructure into a massive, decentralized fragmentation bomb.
"You blow the foundation to blind the security grid," Lyra said, her mind already moving to the next logistical hurdle. "The explosion will trigger the Vanguard patrols. You will have exactly three minutes to reach the pinnacle observatory, grab the ledger, and jump out a window before the perimeter guards swarm the building."
"Three minutes is enough." Kaelen tightened the strap on his satchel. "Elara is safe in the High Peaks. I have no leverage tying me down. I get the ledger, I bring it to Malakor, and House Vane falls."
Lyra leaned against the structural beam. She did not look convinced. She looked at the blood drying on Kaelen's collar.
"You are treating Patriarch Vane like a static obstacle," Lyra warned. "You think he is just sitting behind a locked door waiting for you to breach the walls. He knows you survived the Crucible. He knows you bypassed the suppression grid."
"He thinks I use glass," Kaelen said.
"He thinks you are a monster," Lyra corrected. She pushed off the beam, closing the distance between them. "And monsters do not fear normal traps. When we breached the medical spire weeks ago, you overcharged a piece of obsidian. You tore a dimensional fracture in the intensive care suite."
Kaelen remembered the sterile white tiles corrupting into black basalt. He remembered the pale, horned woman stepping through the tear in the air.
"The Sovereign Architect," Kaelen said. "The Ministry buried the report. Vane contained the rift."
"He didn't contain it, Vane." Lyra's voice dropped into a chilling, absolute register. "My family holds the architectural contracts for the upper wards. I saw the material orders the Patriarch placed yesterday. He isn't repairing the medical spire. He reinforced the pinnacle observatory with foot-thick plates of cold iron and abyssal salt."
The tactical math Kaelen had just built completely collapsed.
"He moved the rift," Kaelen realized.
"He weaponized it," Lyra confirmed. "He isn't using Vanguard mercenaries to guard the ledger. He knows you can kill mercenaries. He moved his private vault directly into the center of the dimensional fracture."
The winter draft howling through the shattered window suddenly felt much colder.
"If you blow the brass pipes and shatter the crush-wards," Lyra said, staring directly into his eyes, "you aren't opening a path to a book. You are opening the cage to a First Era nightmare. The ledger is sitting at the feet of the Sovereign Architect. And you just told me you intend to walk into that room completely unarmed."
Kaelen looked down at his raw, empty hands. The Vane Estate wasn't a fortress anymore. It was a labyrinth designed to feed him to a god.
"Get me to the sub-basement," Kaelen said.