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.
Humans are foolish.
البشر حمقى
Menschen sind dumm.
Los humanos son idiotas.
Los humanos son idiotas.
Ce que les êtres humains
peuvent être stupides !
Gli umani sono sciocchi.
Humanos são tolos.
Люди так глупы.