A past event is shown where a mysterious woman named Azami is attacked by men believing her to be a monster, but she fights back using her powers in order to protect her daughter, Shion Kozakura. After learning from the remaining survivor about how her husband, Tsukihiko, got hurt trying to defend her, Azami makes the painful decision to leave her family behind in order to protect them from any further harm. As time went by, Shion eventually gave birth to Marry and raised her by herself, making sure she wouldn't leave her home...