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The mystery of Leviathan is close to being solved! Time to look back on how Haru and the others met, and the hardest battles they've faced, while steeling our nerves to face off against Leviathan!
First Air Date : Oct 01, 2016
Last Air date : Sep 30, 2017
Episode : 52 Episode
Season : 1 Season
Runtime: 24:14 minutes
Country: Japan