Obsolete
English title: Obsolete
Japanese title: OBSOLETE
Type: ONA
Source: Original
Episodes: 12
Status: Finished Airing
Aired: Dec 3, 2019 to Dec 1, 2020
Duration: 13 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Buemon
Producers: Nitroplus, Good Smile Company, Bandai Namco Arts, Bandai Namco Online
Licensors: Sentai Filmworks
Themes: Mecha

In 2014, aliens revealed themselves to request trade with humanity. In exchange for limestone, they would provide a consciousness-controlled general-use robot known as an "Exoframe." Cheaper than an aircraft, tank, or firearm, and easy enough for anyone to operate, the "Exoframe" spreads change throughout the world in the blink of an eye... 

(Source: Official site)