Burn Up! Excess-Volume 4: The Case of the Black Diamonds (1997)

4-CARAT COMEDY AND PRICELESS POLICE ACTION When an army of mecha cops are put on patrol, it looks like the women of Team Warrior might be out of a job - until the electronic enforcers start breaking the laws they're supposed to uphold. But while the cops are in for repair, the Team finds a connection to Maki's past. This mysterious like to the Black Diamond Case prove...