Obsolete
English title: Obsolete
Japanese title: OBSOLETE
Type: ONA
Episodes: 12
Source: Original
Studios: Buemon
Producers: Nitroplus, Good Smile Company, Bandai Namco Arts, Bandai Namco Online
Duration: 13 min per ep
Rating: PG-13 - Teens 13 or older

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)