Miyu, a vampire girl, acts as a guardian, sending stray demons known as Shinma back to the darkness while publically posing as a high school student.Miyu, a vampire girl, acts as a guardian, sending stray demons known as Shinma back to the darkness while publically posing as a high school student.Miyu, a vampire girl, acts as a guardian, sending stray demons known as Shinma back to the darkness while publically posing as a high school student.