Discover Japan's stories—across time, across language.
| Original Title | 九つの鍵 |
|---|---|
| Author | 野村 胡堂 |
| Genre | Detective & Mystery |
| Author Type | Male Author |
| Summary | After a triumphant debut piano recital, Aiko Kariya, a prodigious young talent, is snatched into the night sky by a mysterious rope, leaving her brother, Saburō, reeling. This audacious kidnapping is just the opening move in a deadly game for an immense fortune. Their grandfather, the legendary "Coal Mine King," had hidden his wealth, sealed by nine ingenious keys meant to rebuild post-war Japan. Now, a ruthless syndicate, led by a treacherous relative, demands these keys in exchange for Aiko’s life. With his home ransacked and time running out, Saburō, a brilliant mathematics student, must race against formidable adversaries. Aided by his sharp-witted cousin and resourceful local siblings, he embarks on a desperate quest to uncover the labyrinthine clues of the "Nine Keys" and rescue his sister before the treasure falls into the wrong hands, condemning their future. |