Synopsis: Ai Death Gun

Sajimiya Reiji and Mijou Yashiki are a duo that employs their Death Guns to track down Artemis, a clan of vampire-like creatures formed as a result of a natural catastrophe that happened 100 years ago in the story. As soon as Pleiades, a group of Artemis, starts attacking people indiscriminately and turning them into vampires, inexperienced newbie Takao Iota bands together with his seasoned colleagues to find the culprits.