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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.
First Air Date : Oct 03, 2021
Last Air date : Mar 26, 2023
Episode : 67 Episode
Season : 1 Season
Runtime: 24:14 minutes
Studio: Fuji TV, Tokai Television Broadcasting, Kansai TV, Hokkaido Cultural Broadcasting, Iwate Menkoi Television, Sendai Television, SAGA TV, Ishikawa TV, Television Nishinippon, OHK, Kochi Sun Sun Broadcasting, Television Shin Hiroshima System, TV Shizuoka, NST, NBS, Sakuranbo TV, TSK, Ehime Broadcasting, KTS
Country: Japan