Usagi and Inspector Ishida resort to enlisting the help of Nezumi the thief in order to locate Oda, who is in hiding after the assassination attempt. Meanwhile, the mysterious foreign box falls into the possession of government agents. However, after an illuminating meeting, Usagi and Ishida find themselves suddenly hot on the trail of a secret that could topple the Shogunate.
- "The Hidden" (Part 5 of 7)