Ane-san

The two sisters, Ai and Yuuko, have taken different paths in life. Yuuko has been taken away by a mysterious gang. Ai is determined to save her from the clutches of crime. In a seemingly all-female city overrun by insane workers, biker gangs, and assorted criminals, Ai and her friends Chika and Makoto decide to work together in order to restore the world to normality again.