Back Arrow anime
The world of Lingalind surrounds itself by a mysterious wall that seems to have no limit. The wall is revered as the mother of the land and delivers celestial gift capsules known as “Rakuho” to various locations on the continent. The capsules are delivered once per month and contain metallic armbands which allow the wearer of the capsules to become a mechanical being called a “Briheight.” Lingalind is constantly in turmoil due to the warring nations that try to purchase the offerings for their military prowess.
A Rakuho crashes in the countryside one day with an unwelcome inhabitant, a mysterious black-haired male. The strange, black-haired man calling himself “Back Arrow” is the focus of all eyes. His claim that he hails from a land beyond the wall could be a clue to Lingalind’s dogmatic foundation.