This is the Black mage tainted hearts clear hearts brother. While fleeing the hurmanian army hunting the tainted became sick, his sking became grey, and he started speaking of dreadful things, that evening they stopped to spend the night in a cave not to far from the road side, as they slept the some Hurmanian scouts came across their cave, tainted eyes flickered as he suddenly felt a cold rough hand grip his mouth, and then all became black, when he woke up he was surrounded by courpses.