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?
Damn! My body is so sluggish!
Verdammt! Mein Körper ist so schwer.
¡Demonios! ¡Mi cuerpo es tan lento!
Bordel, mon corps est lourd !
Droga! Meu corpo é tão lento!