Sword of Kusanagi: Chidori Katana

This technique allows Sasuke to flow Chidori through his chokutō. This makes it nearly unblockable as the radiating and chirping blade can easily cut through steel. Furthermore, if an opponent is stabbed, their body goes numb due to an electrical current which causes the muscles to go stiff, making it impossible for the opponent to move. However, it can be countered by other weapons that also utilize chakra flow, such as Killer Bee's swords.