What to Do at the End of the World, Prologue to Origins

Five hundred years ago, the last era of mankind. The black-haired boy William Kemeishu is a man who has no talent but wants to protect everything. He is his family in the nursing home, a red-haired brave girl, and his comrade-in-arms. He faced the Earth God alone, and the seven forbidden curses of national subjugation turned him into stone and fell into a deep sleep. And humanity will be completely extinct in one year. This is the prologue to all that is lost.