The Republic of San‑Magnolia has long been under attack from the Giadysian Empire, which created a series of unmanned military machines called "Legion." After many years of painstaking research, the Republic finally developed autonomous drones to repel the enemy"s assault. San‑Magnolia succeeded in turning a one‑sided struggle into a war without losses, at least that"s what the government claimed. But as everyone knows, there is no war without casualties. Beyond the eighty‑five districts of the Republic lies a "nonexistent" eighty‑sixth district. It was here that bloody battles took place every day. Young men and women from the unit called "Eighty Six," lacking unmanned machines, gave their lives for the homeland. This is their story.