The Obsidian Cloister

I needed to know if the Cordon had left a kill switch in the cellar before Souta came back with our next set of execution orders.

By mid-morning, the light spilling through the armory’s high slits had turned the color of cold grease. The bleeding from Naoto’s shoulder had stopped under the sulfur dressing, leaving him pale but steady on his feet. He had strapped his uniform coat over his right shoulder like a cape, leaving his bandaged left arm pinned close to his ribs. In his right hand, he carried a heavy iron pry-bar from the maintenance racks. In mine, I held the brass lantern and the folded surveyor’s map.

"The western gallery collapsed thirty years ago," Naoto said as we reached the bottom of the west wing staircase. "The official Cordon gazetteer lists the entire lower quadrant as unstable shale. It was backfilled after the third containment breach."

"The Cordon gazetteer was written by clerks who wanted you looking east," I replied.

I lifted the lantern. The yellow flame caught the base of the stairwell where the corridor ended in an avalanche of shattered granite and split oak timbers. To a passing patrol, it looked like an ordinary roof fall. A solid wall of gray stone, clogged with lime dust and choked with cobwebs.

I set the lantern on a dry step and knelt at the edge of the rubble.

"Look at the strike marks," I said, tapping the flat of my dagger against the lowest block. "Natural subsidence shears along the bedding plane. These stones were split with feather wedges and dropped from above. Someone stacked the facade to look collapsed from the outside while keeping the lower arch clear."

Naoto leaned closer, the scent of sulfur wash and clean linen rising from his collar. His gray eyes narrowed as he traced the seam where two dressed stones met without mortar.

"A false bulkhead," he murmured.

"First Assault sapper work," I said. "We built dozens of them in the northern trenches to hide ammunition caches from aerial scouts. If you pull the bottom block, the whole apron drops on your head. You have to find the pivot stone."

I ran my gloved fingers along the left jamb, feeling for the cold draft slipping through the joints. Four inches above the floor, the mortar gave way to dry packed moss. Behind the moss sat an iron ring, rusted orange but intact.

"Take the pry-bar," I told him. "Seat the tip behind the ring. When I lever the top lintel, pull toward your right boot. Don't jerk it. Just hold the weight."

Naoto wedged the iron bar into the gap, his boots finding purchase on the flagstones. "Ready."

"On three," I said. "One. Two. Three."

I threw my weight against the oak lever I had wedged beneath the lintel. Stone scraped on stone with a dry, grinding shriek that set my teeth on edge. The pivot block swung inward on its hidden iron pintle, opening a narrow vertical breach just wide enough for a soldier with a pack.

A gust of air rushed out of the dark. It tasted of old stagnant brine, pulverized slate, and the faint, unmistakable ozone tang of condensed rot.

Naoto did not let the iron bar drop until I had slid a timber chock beneath the opening. He exhaled through his teeth, his right shoulder taut from the strain, but his bandaged left arm remained steady against his chest.

"The Cordon engineering corps never taught us that," he said quietly.

"The Cordon engineering corps builds forts to keep people in," I said, gathering my satchel and the lantern. "My division built holes to keep people alive. Squeeze through. Watch your bandages on the granite."

He slid sideways through the gap first, landing softly on the floor beyond. I followed, ducking low under the jagged lintel and pulling the lantern through behind me.

We stood on a broad landing of polished black stone.

The map had named this place the Obsidian Cloister, and the name was not a metaphor. The walls were constructed of seamless, jet-black basalt that swallowed the lantern light like velvet. A wide flight of shallow stairs descended into a vast subterranean hall. Down below, two inches of still, inky water covered the floor, mirroring the groined arches of the ceiling fifty feet above.

The silence here was different from the ruined manor above. It was heavy, pressurized, and cold.

"Moving water stops the Shimi," Naoto whispered, his boots halting on the bottom step before the dark pool. "This water is dead."

"Dead, but shallow," I said. "Step toe-to-heel. Roll your weight through the outside of your foot. If you splash, the sound will carry through these basalt arches like a drum."

I stepped into the water. It was ice-cold, soaking through the seams of my leather boots, but the floor beneath was solid, paved flagstone without silt.

Naoto followed my line, his footsteps silent despite the heavy Cordon field boots. We moved between double rows of colossal hexagonal pillars that vanished into the darkness ahead. Phosphorescent moss clung to the high ribbing, casting a faint greenish sheen across the black water.

Every ten paces, I stopped, cocked my head, and struck the pommel of my dagger against the nearest pillar.

Ting.

The clear note vibrated through the stone, dying out without an echo.

"What are you listening for?" Naoto asked under his breath, his eyes scanning the shadowed ceiling vaults.

"Hollow chambers and Shimi nests," I answered. "A live hive resonates like a wet horn. Solid stone rings clean. Keep your eyes on the ceiling ribs. Stalkers like to drop from the cross-vaults when they hear prey wading."

We reached the center of the hall, where the pillars parted around a raised circular dais. At the center of the dais stood a heavy bronze door, green with centuries of verdigris, set directly into an octagonal tower of black granite. Above the lintel, an Imperial sunburst was carved deep into the bronze, encircled by the twin-fan insignia of the ancient Meisho Reclamation Ministry.

Naoto paused before the seal. "The Reclamation Ministry was dissolved before the Great Containment. My grandfather served under their banner."

"Then let's see what your grandfather's masters left behind," I said.

The door had no keyhole. Instead, a central bronze wheel with three locking spokes stood locked behind a heavy chain. The chain was secured with a Cordon Directorate padlock, stamped with recent inspection marks in white lead paint.

"Souta's division inspects this door," Naoto said, his voice tightening. "The paint is less than six months old."

"Then it isn't an ancient ruin," I said. "It's an active warehouse."

I unhooked a slender strip of spring-steel wire and a flat tension bar from my tunic lining. Kneeling before the lock, I set the tension bar against the lower tumbler and probed the brass pins with the wire. The tumblers were oiled and clean, slipping under the pick without the grit of abandoned iron.

Click. Click. Clack.

The padlock popped open in my palm.

I caught the heavy iron hasp before it could bang against the bronze plate. Naoto reached out with his right hand, gripped the outer spoke of the wheel, and turned it with slow, deliberate force. The internal bolts drew back with a muffled, oily slide.

We pushed the bronze door inward.