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.
"Sturdy is an understatement," he muttered, his breath hitching. Japanese Escape from The Room with Sturdy Door ...
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. Frustrated, he looked at the key again