BUDDY COMPLEX (Manga)

is a Japanese manga adaptation of the 2014 Sunrise Anime Series, written and illustrated by Hiroki Ohara. The manga was serialized in the Dengeki Daioh magazine and published in Japan by ASCII Media Works under the Dengeki Comics NEXT imprint from March 2014.

Synopsis
On the first day back after summer break, high-school student Aoba is attacked by a giant robot that appears out of the sky. As he's pursued through the city, his classmate Hina appears in a robot of her own. She rescues him, and tells him cryptically that "Dio is waiting for you," before she disappears. This begins Aoba's new life as the pilot of the Free Treaty Alliance against the Great Zogilia Republic.

(Source: AnimeNewsNetwork)

Buddy Complex: Senjou no Coupling
A spin-off manga with art by Sakae Saito. It was serialised in Dengeki Maoh and released under the Dengeki Comics NEXT imprint in September 2014.