Yuta Hibiki wakes up in the home of his classmate, Rikka Takarada, with amnesia. A voice from an old computer, identifying himself as "Gridman," has a mission for him, but can he even survive the next day of school without his memories?
Oh, that guy was calling to me.
Nichts, ich wurde von ihm gerufen.
Oh, ese sujeto me estaba llamando.
Ce gars m’a appelé.
Ah, aquele cara estava me chamando.