Demons and blindness aren't mutually exclusive. Shabriri is a demon from Hebrew mythology who blinded those who drank uncovered water. Probably a story made up to stop people doing just that, when you stop and think.

[ The wonderful world of information you didn't ask for, with charming host Snake. ]

I got a book on Egyptian mythology because I'd like to know a little more about my Persona before I have to use it.

[ He laughs a little. ]

I'm sure they'd have 'Twas the Night Before Christmas, if you'd like to do the same.