What kind of expression is he wearing now, the one who sentenced me to death?

Betrayed by Archduke Richard Valerion, with whom he once shared love, and transformed into a demon after enduring horrific pain, Luke perseveres through ages driven solely by a desire for vengeance. He finally claws his way back to the surface and appears before Richard, who stands at his son’s grave, in the form of the demon ‘Ale.’