This sword was crafted and Handmade by Orochimaru in order to assisit Setsuna in using his Cursed Seal of Heaven in a new distinct way. Setsuna denied the chance to go into the second state and instead found a different way to use the Cursed Seal to enchance his abilties. The Curse seal his own Setsuna arm once activated his Arm takes on a demonic shape and form allowing him to reach great distance and stike with stronger results. Whe weilding his blade he can trasnfer that corruptive influence into his blade making it a dangerous tool. As ht can corrupt the blade with his curse makr and do extra damage to his opponents or use the blade as a standard sword