Genius inventor Null tragically loses her older sister Peta in an accident. To get over the grief, Null develops "Peta Robo," a robot with the same characteristics as her late sister. However, the robot is a little different as to what Null expected. (Source: MAL News)
Null main | Azumi Waki Japanese |
Peta main | Reina Ueda Japanese |
Kaki supporting | Maki Yamamoto Japanese |