天元突破グレンラガン

In a future where humanity lives in cramped underground villages, the hotheaded Kamina of Giha village dreams of reaching the surface, while the timid digger Simon keeps his head down. When Simon unearths a small face-shaped mecha called a Gunmen and the gunslinger Yoko arrives from above, the two boys break through to a world ruled by Beastmen and the war machines they pilot. This manga adaptation reorders events from the anime and restores character backstories the anime cut.