Second Shibuya High School upper - secondary school in the city of Shibuya, the capital of the Japanese Imperial Demon Army's empire. The school possesses the usual educational facilities and in addition, it seems to possess a underground laboratory where captured vampires are to be experimented on along with an underground temple, which the army uses as a hostage. In this world there's a war against humans and vampires. Teacher who teaches fighting and Japanese. Uses violence as punishment to