Ryuunosuke Natsume is the son of genius inventor Kyusaku Natsume and overbearing Akiko Natsume, CEO of Mishima Heavy Industries. Using funds from his wifes company and the brain from his sons beloved cat, Kyusaku creates a revolutionary android called Atsuko Nuku Nuku Natsume. To Kyusakus disgust, Akiko wants to use her husbands technology to create weaponized robots for her companys customers, resulting in Ryuunosuke getting caught within the explosive fights between his parents

The android Nuku Nuku tries to live as a normal high school student, adopting the role of Ryuunosukes elder sister, but usually ends up acting as her familys protector. Nuku Nuku will do anything to protect the ones she loves.

[Written by MAL Rewrite]