Episod 54 - The Half-Vampire's Challenge

Framed by her stepmother, werewolf princess Sylvia is sold at an auction and bought by Vincent, a powerful underworld figure. Using her mother's rescue as leverage, Vincent trains her as a tool to seduce his enemy, the vampire lord. But after three years, as Sylvia is sent to perform her mission, Vincent loses his mind seeing every trick he taught her used on another man.