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An old man speaks of a golden city that lies within a devouring abyss somewhere in uncharted waters. One explorer may be the key to finding both.
First Air Date : Jul 07, 2017
Last Air date : Sep 28, 2022
Episode : 25 Episode
Season : 2 Season
Runtime: 24:14 minutes
Studio: AT-X
Country: Japan
Cast: Miyu Tomita, Mariya Ise
