He walked to the entrance. The door was a heavy slab of , reinforced with blackened iron bands. He pushed. It didn’t even creak. It felt more like part of the mountain than a piece of carpentry.

He rushed to the door, but there was no keyhole. Just a smooth iron plate.

A heavy thud vibrated through the floor as the internal dropped. With a monumental heave, Kenji slid the massive door aside. The cool night air of the Kyoto suburbs rushed in, smelling of cedar and rain. He was out.

He turned his attention back to the room. In the center sat a low table with a single ceramic tea bowl. He remembered his grandfather’s stories: In a kura, the secret is never in the lock; it’s in the architecture.

Kenji knelt and ran his fingers along the floorboards. Most were tight, but near the (the decorative alcove), he felt a slight give. He pressed harder. A faint click echoed. A small compartment popped open, revealing a heavy iron key with a jagged, unusual bit.

Frustrated, he looked at the key again. Its shape wasn't meant for a turn-lock; it was a . He noticed a hairline gap between the door frame and the heavy wooden beam. He slid the iron key into the slot and pushed upward.