Nagamitsu

, also commonly referred to as the, was a conceptual weapon created by Kazuhide through the use of Tamahagane. This weapon, much like Chikakage, was forged through a combination of Kazuhide's own  and and assimilated chakra of Kaname Soga through the use of another conceptual armament, Hakyōmei.

Nagamitsu possessed abilities that were derived from, a technique utilized by the and  entities. While paling in comparison to the scale utilized by, this blade could launch directional bursts of energy triggered various natural phenomenon. As such, it was possible for Kazuhide to create massive shock waves that manipulated wind, water, lightning, and earth in their natural forms. Furthermore, the blade itself possessed an incredibly sharp edge and incredible durability, able to ward off the strikes of a stabilized Tamahagane blade without noticeable damage.

Much like Chikakage, this weapon was destroyed by Kyōtetsu when Kazuhide was forced to face it in battle. The broken fragments of chakra from both Chikakage and Nagamitsu were eventually reforged into a staff named Muzō Jōman, which was given by Kazuhide to this daughter, Tomoe.