Seiyaku no Frontline
Front line of the oath·誓約のフロントライン
A student named Sai encounters a battle robot that declares his mission to eliminate all humans, warning that if he fails, someone else will take his place. Sai discovers he can operate the robot using his cell phone and decides to use this ability to prevent humanity's destruction.
Isinasalin pa — orihinal na teksto sa English.