This was definitely the one.
Joel thought while he was busy picking up the trash floor after floor. He stood with one hand on his hips as he browsed through his phone and read more and more about the DPB and the world of the exorcism industry in general. He got to understand more about it and know just what his sister has gotten herself into by taking it as a career path.
It was a dangerous one that not any sane person would be willingly to sacrifice their all for it.
But his sister was far from being considered normal, to start with it.
As he read further, he realized that to be known as an exorcist, there is a special university you have to graduate from apart from the normal one. A university heavily funded and supported by both the government and the DPB.