Kaoru, a friend from the piano class Ruli once attended, has gone missing. While searching for her, Ruli and the gang find a strange dent and her shoes. And as they continue their search, Hiro is suddenly asked a mysterious riddle.
What?
ماذا؟
Was?!
¿Qué?
¿Qué?
Hein, quoi ?
E ora che succede?
O quê?
Что теперь?