My plotbunnies insist that character design matters.
I’ve read comments on Kabaneri of the Iron Fortress to the tune of “Ikoma, get your glasses fixed already.” The thing is, if you look at some screencaps, we see Ikoma’s glasses have two intact lenses. One’s just clear, while one is green.
Which actually tweaked something in memory, so I went poking.
So. I have 3 possible reasons Ikoma might have that pair of glasses. Thought I’d toss them for feedback. 🙂
1) Color-blindness. Wearing one colored lens, while it won’t allow you to see the colors you’re blind to, will help you distinguish them better. This would be very important to an engineer.
2) Dyslexia. One (or two different) colored lenses helps some dyslexics read, apparently by toning down a brain-eye movement mismatch.
3) Looking at stereoscopic pics.
His glasses wouldn’t be the best for that, given that works better with two contrasting-colored lenses, but it would work.
I have to admit, given we see him looking at a very detailed depiction of a Kabane heart, and the fact that he’s a steamsmith, the last seems most likely. Though it doesn’t explain why he’s wearing them almost all the time… unless he really does need glasses for another reason.