In 20XX, after massive global conflicts, the rebuilt Second Tokyo City faced worsening public safety. Amid this chaos, Tsukumori Mio, the female police chief of Tsukimachi City, by day upheld justice within the law, while by night donned a special powered suit left behind by her deceased husband to fight criminals beyond the reach of the law, protecting the city. Known as "Darkness-Slaying Dark," she was immensely popular among citizens. Yet, to the underworld, she was a figure of fear and hatred. One day, a small traveling circus arrived in town, suspected of involvement in a series of abductions. Distrusting the corrupt authorities, Mio infiltrated the circus in her Dark persona—but when she let her guard down, she fell into a trap and became a spectacle on display... [BAD END]