Akatsuki
Akatsuki: a powerful demon disease that spreads to the victims, paints their eyes and slowly kills them. Usually they take the shape of a strong monster associated with the sacrifice body. The only way to cure the victims infected with Akatsuki is to cut the body of the victim with special weapons against Akatsuki, known as the "thirst". People who own and use this weapon are called "Kiri - Isha" (Dr. Slash). Hibiki, the main character of this story, is Kiri-Isha. He is associated with Kirisa, another Kiri-Lisha. Your mission is to cure people infected by Akatsuki.