ℕ𝕚𝕜𝕜𝕖: 𝔾𝕠𝕕𝕕𝕖𝕤𝕤 𝕠𝕗 𝕍𝕚𝕔𝕥𝕠𝕣𝕪

Placed in a post-apocalyptic future where the Earth was suddenly attacked by unknown mechanical creatures called Raptures that destroyed everything on the surface, forcing the remaining humans to take refuge underground and establish the Ark, a metropolis ruled by the Central Government. The manufacturers Elysion, Missilis Industry and Tetra Line-owned by Ingrid, Syuen and Mustang, respectively-that compose the Big Three work on converting women and children into powerful obedient soldiers called Nikkes to be used as a weapon to defeat the Raptures and restore humanity on the surface. Due to their prominence, the Big Three CEOs have very high authority; they are, however, heavily monitored by the Central Government to prevent any hostile behavior.