Sou, being a god of death, has only one task - to gather human spirits. Yet one evening, she decides to browse through the notorious "Black Book" - a catalogue of risky individuals - to choose her next target. By chance, she selects Ashiya Makoto and seeks her out. Sou finds Makoto in a hospital and reveals that the woman has just a month left to live. Sou then proposes a deal: in exchange for Makoto's soul, Sou will grant her any request. Makoto takes advantage of this opportunity and stuns even the deity of death with her unorthodox desire.
