Responses
Technically speaking, his thumb is not touching the glass. Only the side of his thumb, so no fingerprints on it! I think it would be quite hard to smudge out the lens with just your skin and not the tip of your thumb?
oh you're right. huh. I didn't realize it was the side. yeah i tried testing it out. looks like it should be fine after all haha.
http://www.mangago.zone/read-manga/kijima_kun/mf/c007/27/
Please...Remove...Your Thumb...From the Lens! D: You'll get them all smudgy, stupid Kijima!
Incidentally, glasses-less Tachibana bumping into things like an idiot was pretty refreshing to see. His eyesight must be pretty bad compared to all the other "cool" megane semes who still maintain their "coolness" when losing their glasses.