Momozaki Otome, a girl with a strong sense of justice, encounters a person being attacked by a demon and tries to help her, so she is asked by a mysterious stuffed animal, Arun, to transform into the superheroine Pure Andromeda and fight the monster. At first, Andromeda had a winning streak without much difficulty, but she was completely toothless against the demon executive Seirene and the demon boss Barba, and was captured and subjected to a fierce interrogation. The maiden, rescued by Arun, refuses to fight out of fear of Barba, which is not allowed. Fear, pain, and despair casually attack the maiden who has become the heroine. ［BAD END］