Bound by the Wolf Mark, We Rule the Abyss Together

Ethan, a human who tumbled into the underground world by accident, sealed a life-or-death pact with Lucas, the Silver Wolf Prince bound by bloodline chains. A tyrannical lion king lurks as an external threat, while an above-ground human industrial conglomerate plots to destroy the secret realm. They lift each other up and redeem one another, shatter tribal prejudices, join forces to fend off disasters, and finally ascend the throne side by side. Bound by an everlasting bond, they protect each other and the entire hidden land.