Azusa previously lived as a normal 27-year-old human on Earth, in Japan, as a "corporate wage slave," working long, consecutive hours at the expense of her personal life. This work ethic eventually resulted in her death, as one day she blacked out and awoke to the sight of an Angel. After pitying Azusa for her short life, the Angel promises to ensure Azusa's next life has the potential to bring her "sheer happiness," and allows her to make any prerequisite wish she wants for her next life.