The short and sweet yuri title you are about to enjoy is called Sukura Halloween. It's about a vampire named Miyu de Lioncourt. She's furious at Countess Elizabeth because she didn't invite her to the Halloween party she was throwing. So, she plans on crashing the Halloween party but runs into her ex-girlfriend Sabrina, a witch. Sabrina could care less about running into her ex-girlfriend, which kicks off even stronger emotions in Miyu. But, things are about to get crazy, and they will when she seeks revenge on everyone.