evil sasuke sword made its debut in the popular manga Naruto Chapter 308 and the blade's name was highly debated among fans worldwide. In that chapter which was titled "Sasuke's Strength", Yamato Taichou tried to stop evil sasuke sword with his kunai but failed. Instead his kunai was cut in two by Sasuke's sword. Sasuke later quoted "You see, the sword of Kusanagi I hold here is a little special. It's the kind that can't be blocked". This caused some confusion because readers who have followed the manga since the beginning would know that Orochimaru also had a sword of Kusanagi when he battled it out with the 3rd Hokage, only difference is Orochimaru's Kusanagi looked more like a katana.
