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.
Do you think one of them is Kaoru?
هل كاورو من بينهم يا تُرى؟
Ist einer davon also auch Kaoru?
Credete che là in mezzo ci sia anche Kaoru?
Acham que a Kaoru também está aí?
Значит, среди них и Каору?