Sentinel of Oakhaven: the Sacred Rune (Vol. 57)

Summary

In a high-altitude fortress carved from solid mountain ice, a street-smart thief searching for a legendary key discovers a silver cylinder containing the memories of a fallen emperor that could unlock the gate to a realm of ash and eternal night. Pursued by the shadow syndicate known as the Obsidian Hand, they must race against time before the arrival of the next solar eclipse.