The realm of Lingalind is encircled by an enigmatic barrier that seems to hold nothing beyond its limits within the realm's borders. Venerated as the land"s matriarch, this wall sends divine parcels known as Rakuho to settlements throughout the continent. Arriving each month, these packages hold metal armlets that grant the bearer the power to become a mechanized entity called a Briheight. Consequently, Lingalind is plunged into perpetual conflict as rival states vie to acquire the gifts and augment their armies.
One afternoon, a Rakuho skids onto the heart of a quiet countryside amidst rolling hills, carrying an unforeseen passenger—a shadow‑haired stranger. All attention turns to this odd newcomer, who introduces himself as Back Arrow and claims origin from a realm beyond the wall—a truth that could shatter Lingalind"s entire doctrinal certainty and faith.
