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 am I?
ما أنا؟
Was bin ich?
¿Qué soy?
¿Qué soy?
Qui suis-je ?
Cosa sono?
O que eu sou?
Что я такое?