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?
If he has memory loss,
he might have hit his head.
Wenn er ’ne Amnesie hat, könnte
er sich den Kopf gestoßen haben.
Si tiene pérdida de memoria,
debe haberse golpeado la cabeza.
Il a peut-être un traumatisme,
s’il a perdu la mémoire.
आह…
Se ele perdeu a memória,
ele deve ter batido a cabeça.