he is hunting for his sister to bring her home to her forgiving father. Chief Inspector Ito – Inspector Ishida's irritable superior, who is more concerned about keeping his position rather than dispensing true justice, which regularly puts him at odds with Ishida. Jotaro – Jotaro is the son of the titular character Miyamoto Usagi, but they do not acknowledge it to each other because his mother Mariko decided not to tell either of them that they share this knowledge. They treat each other as uncle and nephew, and neither is aware that the other knows the truth. Jotaro is currently training to be a samurai under Katsuichi and has displayed formidable skill for his age; he has defeated adult opponents with his bokken in single combat, despite his still small stature. Kakera – An anthropomorphic rat and mystic possessing the gift of foresight and the ability to summon beings from other realities, specifically the Teenage Mutant Ninja Turtles. He was exclusively featured in the Usagi Yojimbo crossover comics "Shades of Green" #1-3 (featuring the Mirage-Turtles) and TMNT/Usagi Yojimbo (with the IDW-Turtles). His name (欠片; engl. "splinter") and appearance are a clear nod to Splinter, the adoptive father of the Turtles. Katsuichi – Katsuichi is one of the most formidable swordsmen in the series. His name is said by Stan Sakai to be a combination of katsu ("to win") and ichi ("one"), or "one who wins". He is an anthropomorphic lion samurai sensei who rejected the orthodox fighting styles to create a distinctive new technique. The death of the love of his life, slain by a greedy rival from another sword school, further cemented his decision. However, he soon abandoned his school due to his dissatisfaction with the poor quality students available. Only a handful of students have managed to adapt his style, including Usagi and his son Jotaro. Keiko – A little girl who is Jei's companion. She joined him after Jei killed a gang of bandits who had murdered her grandfather, who was her only remaining relative. She seems to share a strange connection with Jei's spirit as is able to recognize him immediately when he possesses a new host and realize when he has abandoned a host temporarily. She is the only person Jei seems to care about and that is safe near him. She refers to him as "uncle". Kenichi – A childhood rival of Usagi