lol he on and off wears his glasses throughout the series. He also has a professional and casual look when it comes to his hair (when it up and part, all the way down)
He can't possibly wear the same hairstyle all the time
I don't know, maybe I don't remember, but when I read the latest update I feel like the professor's appearance changed so much I was confused and couldn't even recognize him at first.
Also, I understand him letting his hair down but I didn't think he wouldn't wear his glasses except in the shower. Yes, he could've worn contact lenses but I thought he's so old fashioned he wouldn't change to contact lenses.
Actually, it's not a problem at all and it's no big deal to the story itself, it's just that I read this story because of the professor's appearance.
Why does the professor's appearance changed..? The hairstyle changed and the glasses is gone, dang, I don't like it... I like the slick hair and glasses, if he doesn't go back to the old appearance when they're in school then I guess I'm not reading this anymore...