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.
Koha Batto!
!كوها باتّو
Koha Batto!
Matraquage Mortel !
Koha Batto!
Koha Batto!