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.
Kaoru-san was last seen here
when she parted ways with her teacher.
شوهِدَت كاورو-سان آخر مرّة هنا
عندما افترقتْ عن مُعلّمها
Kaoru-san wurde das letzte Mal
beim Abschied von ihrer Lehrerin gesehen.
L'ultima volta che è stata vista
stava salutando la sua insegnante qui.
A Kaoru foi vista aqui pela última vez
quando se despediu da professora.