Kotoko arrived in Makurazaka City to take care of the incidents with Steel Lady Nanase and happens to run into Saki, who had become a police officer. Saki decides to research Nanase Karin a bit more and learns that the former idol had died a mysterious death. In order to defeat Steel Lady Nanase, they would need more details, but...
The tank on my back just shows 
what a pure, modest girl I am
Der Wassertank auf meinem Rücken zeigt,
was für ein braves Mädchen ich bin.
O tanque nas minhas costas mostra
como eu sou pura