When a grisly murder scene in modern-day Tokyo blocks our protagonist's walk home, an unplanned detour leaves him buried and unconscious. He awakens in a new Tokyo, a wasteland ravaged by apocalypse now called Da’at... but before bloodthirsty demons can claim his life, a savior emerges, and they unite to become a mighty being neither human nor demon: a Nahobino. Searching for answers, the protagonist must forge his own path in a battle between light and dark to dictate the fate of the world.