He's an immortal assassin; they are disposable mages working for the government.

When a young man that goes by the alias Nife, London born - Tokyo bred, is sent on a mission to follow a beautiful young woman to an abandoned school and kill her boyfriend. He expects an easy mission but when he realizes he's been setup by a powerful mage, his life takes a turn for the worse as he's forced to become a disposable government mage and take down the organization that hired him in order to earn his freedom.

But now, forced to grapple with a world beyond his understanding. His ethics are challenged and the way he lives his life is finally questioned, ready to be changed forever.