The chokutō Sasuke Uchiha referred to as a Sword of Kusanagi was his personal weapon throughout the entirety of Part II. It had a black scabbard and matching hilt, and was a larger size than a normal chokutō.

Why does Sasuke use a sword?

Sasuke's Kusanagi does not have any of the abilities that Orochimaru's does, like the ability to extend. It also doesn't have the ability to cut through any material, but Sasuke can channel his lightning chakra through the sword, increasing its strength and range. This also allows him to numb his opponent.

Is Sasuke a swordsman?

By adulthood, Sasuke could use his Kusanagi blade in a high-level battle against Kinshiki and Momoshiki Otsutsuki. He's the strongest swordsman in the Naruto series, despite having only one arm.