Follows a young explorer named Nishihara who makes the discovery of a lifetime.
Iseki Hakkutsushi wa Warawanai: Hourai no Umi Hisui It is also Known as: 遺跡発掘師は笑わない ほうらいの海翡翠, Iseki Hakkutsushi wa Warawanai: Hourai no Umi Hisui
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