Jirokichi plays around during the day, but at night becomes a completely different person. His nickname is Nezumi-Kozo (“Rat Boy"). Jirokichi steals gold coins from corrupt samurai families and hands it over to the poor. He works with his younger sister Kosode.

• Masahiro Takashima
• Hiroyuki Sugiyama
• Shun Yatabe
• Hideaki Takizawa
• Yume Shimano
• Taiga Kyomoto
• Nana Katase