Makube has such a dark past. An exorcist who gets possessed? It must have been embarrassing for the bloodline, so he had to be exterminated.
Except the demons who inhabited him were so powerful, it failed. And now he's all alone. His uncle drills into him that his duty is to make money because of all the havoc he has caused.
Even Iruko (wasn't it Illko before?
@Tanzanite ) could see that her friend was suffering, but what could she do?
Enter Nimura! He seems to be a good mentor for the priesty Kizaki! Was Kizaki an actual priest, or does he dress up as one? Well, whatever the case Nimura's shown to be very competent at expelling demons with ease. All he needed was salt!
I wonder how Iruko and Makube ended up under his care in college?