Golden Kamuy

Saichi Sugimoto is a true hero of the Russo-Japanese war of the early 20th century. Known as "The Immortal", he survived terrible battles fought in extremely savage territories. Unfortunately, when the war ended, he found himself alone and penniless. That's when he discovers the existence of an incredible 75 kilos of gold, amassed by the Ainous, an indigenous tribe living in symbiosis with nature. Unfortunately, the treasure has been stolen and hidden by a man who is now locked up in Hokkaido's most dreaded prison. The only leads to the treasure are strange tattoos engraved on the skin of escaped criminals...