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 is this?
ما هذا؟
Was ist das denn?
¿Qué es esto?
¿Qué es esto?
C’est quoi, cette histoire ?
Ma che razza di storia è?
O que é isto?
Что это?