Life in the peaks of the Iron Mountains is harsh and unforgiving. It is a place of snow, ice, and blizzards, not one of second chances or mercy for the weak. There are but a handful of beings or beasts that can live in such an ungodly place and thrive. One such creature is Yuyokuma, a bear of prodigious size and strength with a shared soul affinity with the Minimoto clan, who worship bears as their ancestors did.