 If you liked
Itsuwaribito◆Utsuho◆
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 ...then you might like
Golden Kamuy
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Very similar feel, the plot is also slightly similar.
Both series contain a quest to find different parts of individual treasures (in Itsuwaribito there are special artifacts or something while in this you can see the treasures as the individual tattoo maps) that lead to a greater treasure altogether.
Both series are set in the past and have interesting casts that travel from place to place. I haven't finished Golden Kamuy yet as of writing this recommendation, but Itsuwaribito also has darker themes as the story progresses which might appeal to readers of both series.