Buddy Complex revolves around the main character, Aoba Watase, an ordinary high school boy.

When Aoba wakes up, he finds himself over seventy years into the future, where the Free Pact Alliance and the Zogilia Republic are at war with each other, and there he meets a young pilot named Dio Junyou Weinberg.

Zogilia Republic, formally called Republic of Great Zogilia (大ゾギリア共和国, Dai Zogiria Kyōwakoku) is a small nation that quickly grew into a superpower by conquering neighboring countries and expanding its territory along mainland Asia, Russia, Eastern Europe, and Scandinavia.

This changed on December 1, 2013 when the company unveiled a website in an announcement that they were developing the "traditional robot action" series, Buddy Complex.

[18][19] A 2-part sequel titled Buddy Complex Final Chapter: Into the Skies of Tomorrow (バディ・コンプレックス 完結編 ―あの空に還る未来で―, Badi Konpurekkusu Kanketsu-hen: Ano Sora ni Kaeru Mirai de) aired on September 29 and 30, 2014.

[21] A separate manga based on the smartphone game was serialized from January 27 to August 27, 2014 in ASCII Media Works' Dengeki Maoh.

[22] A free-to-play multi-player smartphone game titled Buddy Complex: Coupling of Battlefield (バディ・コンプレックス　戦場のカップリング, Badi Konpurekkusu: Senjō no Kappuringu) was released by Bandai Namco Games for iOS and Android devices in Japan on March 7, 2014 with theme song "Orbital Line" by Erica Masaki.