Owari no Seraph: Kyuuketsuki Shahal Seraph of the End: Vampire Reign: The Vampire Shahal
The episode features an original story with original characters, and features a special mission that takes place before the decisive battle in Nagoya. The anime stars a mysterious vampire named Shahal and a human girl named Rikowhom he kidnaps. Shahal's true goal is unknown, and while he's kidnapped Riko, he refuses to drink her blood. Suddenly, he receives a visit from the vampire nobles Ferid and Crowley. Meanwhile, Guren tasks Shinoa's squad with rescuing Riko and returning her to her family.
[Source: Anime News Network]