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2011 • 64 Episodes
Season 1 of The World Unknown to Matsuko premiered on October 22, 2011
2012 • 42 Episodes
Season 2 of The World Unknown to Matsuko premiered on January 7, 2012
2013 • 31 Episodes
Season 3 of The World Unknown to Matsuko premiered on January 12, 2013
2021 • 48 Episodes
Season 11 of The World Unknown to Matsuko premiered on January 3, 2021
2024 • 19 Episodes
Season 14 of The World Unknown to Matsuko premiered on January 3, 2024