Space Battleship Yamato 2199

Out of the Forest of Memories (1x17)

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With the aid of an alien device, Kodai, Yuki and Sanada explore the control center of an abandoned warp gateway created by an ancient civilisation under Gamilas control. In the midst of a deadly undertaking, Sanada unveils a surprise about the Yamato 's navigational functions and his close friendship with Kodai's late brother, Mamoru.