Han Qingyu lived peacefully for nineteen years, and never thought that one day he would become one of the main characters in an epic. An accident occurred out of the blue. The boy was forced wield a knife and began to face everything he knew nothing about: the invasion of civilization, the Azure Allied Forces, the energy mobility device, the unique witness corps; the blade of exile, the sharp streams... He is inconsiderate, he is "The Qing Major" printed on cars and high-rise buildings in the era of full-scale military conscription; he will make the first knife swing in the Zenith War.