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.
Ruli!
!رولي
Ruli!
¡Ruli!
¡Ruli!
Ruli !
Ruli!
Ruli!
Рули!