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作品概要
Many years in the future, the world is swallowed by the oceans leaving no trace of land and people only remain in artificial grounds to survive. Nagisa, a 16-year-old girl who is an expert in diving, is appointed to explore the underwater archaeological site, Atra, and went along with her partner Haruka. She will venture off into the unknown to explore the ruins of the past and encounter marine life.
來源: AniList
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