Summary

In the bustling streets of early 20th-century Tokyo, a mysterious two-sen copper coin finds its way into the hands of a curious young man. What seems like an ordinary coin soon reveals itself to be the key to a perplexing puzzle. As he delves deeper into its origins, he uncovers a trail of secrets, deception, and intrigue. Can he unravel the enigma behind the coin and uncover the mastermind pulling the strings, or will the secrets of the two-sen copper coin remain buried forever?