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.
Hiro!
!هيرو
Hiro!
¡Hiro!
¡Hiro!
Hiro !
Quello è Hiro!
Hiro!
Хиро!