They Call Me a Genius, but I'm a Monster

On the spiritual meter, my spiritual power shocked the whole audience. They cheered for the birth of the third 'ethereal genius', but they didn't know that the power came from the monster awakening in my body. I am an exorcist who protects mankind, and I am also an orc who resurrected from the dead in the shadow of the city. The only way to maintain my sanity is to drink the blood of the protector. When the truth is revealed, will I be the hero they cheer for, or the disaster they fear most?