My Janitor dad is the Alpha

Five years ago, the werewolf Alpha Kane faced off against Vampire Prince Vlad on a border battlefield and won, but the defeated prince left him with a curse. Now living quietly as a janitor, Kane is bound by that dark magic while a longstanding grudge between their kinds simmers beneath the surface. The story follows the hidden Alpha as old enemies and a fated bond pull him back toward the world he left behind.