The Stolen Vampire Prince

Vagrant Hugo found vampire prince Keane, stole his royal blood pact, and made his foster son Holden take the prince's identity, keeping Keane as a servant drained monthly for the pact. Eighteen years later, Vampire King Kyle mistakes Holden for his son until Keane overhears the truth and awakens a blood resonance—father and son reunite. Hugo plants a life-linked blood curse; Kyle breaks it with Holden's progenitor blood. Father and son slay mastermind Marcus; Keane is crowned the new king.