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.
Back Strash!
!باك ستراش
Back Strash!
¡Back Strash!
¡Back Strash!
Back Strash !
Back Strash!
Back Strash!
Контратака!