Obsolete
English name: Obsolete
Type: ONA, Episodes: 12
Aired: Dec 3, 2019 to Dec 1, 2020
Studio: Buemon
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
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)