his sword is a tool a weapon used only used to bring death me honed his techniques w/ war slaughtering literally a endless/infinite amount of masters “魔氣, Unraveling Endlessly” me’s [瀕死之光] Eats Away At opponent's Existence , Endless Torture driving opponent to insanity as opponent feels the pain of All me has ever killed Shattering opponent’s mind Ending In Peaceful Cessation, Leaving opponent a Husk