What i see with the eyes is the eye being shadowed to the background (on both characters), not so much the ones in the foreground. Since you have the eyebrows at a heightened level.. the eyelids look a bit droopy. Maybe if you raised the eye up a little bit and rotate the angle slightly .. it would fit.. or push the eyelid up, but that would widened the eye. I get that "im gonna glare you" to the guy in the dress.. so even if you raise the eyebrow, the eye has to slightly follow since the skin is being pulled upwards.
I dunno if thats right or not, but thats what i see when i look at it.
This is what I was thinking.
Also the eyes farthest from us on both characters (not so much kaito) are smaller then the eyes closest to use... vertically. Even at that 3/4 view the eyes should have the same height as the one closest to the viewer. But really kaitoru's right eye looks really off compared to her left. Kaito's left eye looks as though its on a bit of a weird angle, even considering he's slanting his head down a bit.
HOPEFULLY THAT MADE SENSE.