Shadow Force Assailant: Demon Slash

Shadow Force Assailant: Demon Slash(影軍加害•魔斬, Kagegun Kagai: Mazan): Is an ancient and one of the most deadliest Sword Magic spells ever to have existed in the history of the Earthlands. It is said that only those who are of masters of the sword may be the onlys ones who may use it's destructive force.