--Former haruspex, a religious role, plus he is religious
My room filled with a black shadow
--Lochan has dark mist magic.
But in the darkness I was able to slip away from the seemingly blind thing
--Ashamin and his companions all have eyes with no pupils or that appear to have no pupils.
After the priest learned it was alone, the exorcism started
--Ashamin is an outcast, so "alone"
It could not fly away, and it did not hold a single sword to fight back with
--Doesn't have a swordlike horn or wings
I cannot say what happened next, but the light can always be found in the darkness.
--White markings on a dark body