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?
--Whose?
--Mine!
Wessen Laden?
-¿De quién?
-¡Mío!
– À qui ?
– Moi !
-De quem?
-Minha!