Sword of Kusanagi (Scientific Ninja Tool)

Sometime after Sasuke Uchiha lost his original Sword of Kusanagi , he replaced it with this new one. It is a long, singled-edged straight blade ninjatō . The hilt has a white cloth wrapped around it with a bronze tsuba shaped like a smooth bicone, and a flat, round kashira at the base. It is carried in a red saya with a cord to strap it across the user's backside. A year after helping Boruto Uzumaki escape Konohagakure when framed for killing the Seventh Hokage , Sasuke was consumed by a Claw Grime . Following which, this sword was taken up by Boruto himself.

Originally, it had no special properties apart from acting as a medium for the user's techniques. After it was damaged against Jura , Boruto took it to Sumire Kakei . Utilising new, more advanced scientific methods originally meant to be designed by Sumire herself, but divinated by Koji Kashin for sooner usage, Sumire was able to both repair and upgrade the sword.

Its design was noticeably altered. The hilt wrapping became an alternating twist and the kashira became more elegant with a curved opening. The saya became black with a blue wrapping at the top, two bronzes rings around the top and center of its form, and its base has a long bronze cap at the bottom stretching up with a flame-like design on the sides. The blade's material was treated and curved in shape like a katana for maximum durability and cutting power. The sword was also designed to automatically respond to the user's chakra, allowing one to maintain usage of chakra flow within the blade once a technique is activated, while still gripping the hilt. This is done by recognising the nature of the technique and channeling a small amount of the user's chakra as a medium, enabling one to perform other tasks without focusing on the sword itself with and no additional drain on the user from said technique. It also has a failsafe design, as anyone not registered to use it will quickly have their chakra drained from it should they hold it.

## Trivia [ ]

- Only Boruto, Sasuke, and Sumire are registered to wield this sword.
- This sword’s upgraded features seem to take inspiration from the Scientific Ninja Weapons Team 's Chakra Blade .

## References [ ]