“By the way,” I continued with more questions. “Why are you wearing glasses, Master?”
“These are Mystic Eye Killers. I had to get them at a moment’s notice, so I paid far more than I should have for them, though,” he said in a miserable voice, lifting the glasses up to look at them.
If I recalled correctly, Mystic Eye Killers were a specialized Mystic Code for defending against Mystic Eyes.
Case Files IV, Chapter 2, Part 1