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.
Even if you know my name,
،حتّى لو كنت تعرف اسمي
Selbst wenn du meinen Namen kennst,
Aunque sepas mi nombre,
Aunque sepas mi nombre,
Même si tu connais mon nom,
Anche se conosci il mio nome,
Mesmo que saiba meu nome,
Даже если ты