 Ark is a land similar to feudal Japan, populated by techno-organic Musha Gundams who are often embroiled in civil war.They are cautious of the magic practised by their neighbour Lacroa and very few of them have ever seen human life.Unlike other Gundams, Musha Gundams possess a 'GunSoul', which leaves their bodies upon death, only to reincarnate later.