"Strike the Blood" (also known as "Shikkoku no Shirō" or "Blood-C") is a Japanese light novel series written by Gō Ayano, with illustrations by Yamako. It was later adapted into an anime series.

The story follows Kei Kurono, a high school student who, along with his classmate Natsuo Kiriya, becomes a Contractor - a human with supernatural abilities gained through a mysterious ritual. As Contractors, they must kill "Stakes", which are creatures that emerge from the shadows to feed on human blood and organs. The series deals with themes of morality, the nature of humanity, and the consequences of power.

One unique aspect of the series is its art style and animation quality, which was handled by the studio Shaft, known for their distinctive visual style. The series also features a mix of horror, action, and drama elements.

If you have any specific questions about the plot, characters, or other aspects of "Strike the Blood", feel free to ask!