Black Narrow - wght: 900 | wdth: 25 | slnt: 0 | GRAD: 0 | opsz: 14 wght: 400 | wdth: 25 | slnt: 0 | GRAD: 0 | opsz: 14 wght: 100 | wdth: 25 | slnt: 0 | GRAD: 0 | opsz: 14

lc

* a - center stroke would be better a bit lighter
* s - middle just a little lighter
* e - shift to the left slightly
* f - a bit more space on both
* k - join feels too dark
* v - more space like w
* p - stem feels too heavy
* r - join thinner like a or b , and arm a bit wider
* x, y - feels narrower than the rest

UC
* K - top diagonal seems a bit too light even with some contrast, the lower one is too heavy vs the stem
* R - feels a bit too heavy
* B, D- less space on the right
* C, G - more space on the right
* F - mid bar is lighter than E ( or looks like it is ) it should be slightly heavier.
* A - feels a bit narrow vs H
* Z - More space on both sides. This letter is very nearly overlapping itself and it should not.
* Y - sidebearings more like W
* X - The illusion of 2 diagonal bars isn't created and instead it looks like the top and bottom are pulling apart into two parts.
* O Q - counter a bit too bright