Prelude

Izo Daisuke is a 16-year old student at an academy for young exorcists. All his life, he has been motivated by his hatred towards the Hotaru, demons that don't give a second thought before killing any civilians in their sight. After losing his mother to one, he makes it his personal goal to obliterate the entire Hotaru population. But what if everything he knows about the Hotaru is false?