Already started its Autumn run, Strike The Blood is an action fantasy anime based on the light novel by Mikumo Gakuto (Asura Cryin', Dantalian). It is directed by Yamamoto Hideyo (Prince of Tennis II), and is written by Yoshino Hiroyuki (Accel World, Guilty Crown, Vividred Operation), and is being co-produced by SILVER LINK (Fate/kaleid liner Prisma Illya, Watamote) and CONNECT .
The story revolves around Akatsuki Kojou, an ordinary-looking boy who is actually the most powerful vampire known as "Fourth Ancestor", that was thought to only exist in legend. Being afraid of how dangerous he is, the government dispatches a team of mages known as the "sword maidens", and somehow a girl named Himeragi Yukina is chosen for the task of watching over the vampire as well as take him down, if necessary.
Visit the official website to view more details about the characters.
These scans are picked up from Google image search.
And this is one of the key visuals for the anime.