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?
Y-Yeah.
Ja.
Sí.
– Ouais…
– Faut qu’on se donne un nom !
Sim.