The Katana is single-sided and around 70cm long. They were made in such a way that they were capable of cutting through armour, and even able to slice a person in two.
Jack's katana has a black saya inlaid with mother of pearl, and the blade itself has dark red handles. The color of the cross-guard is presumed to be gold.
Notable characters who used the katana in the Young Samurai Series:
- Oda Kazuki
- Sensei Hosokawa
- Sensei Kyuzo
- Shizu (mentioned)
- Kunitome (mentioned)
Chris Bradford talks about the katana: