Those dark circle around gaara sGaara's eyes are not from sleep deprivation. I was constantly looking at his face to learn about this, but in the translated animaanime, he had lines under the dark circle just a little poke of a line beside his nose where bags pop out the most and.
Also, in the anima narutoanime, Naruto said watswhat's up with him waringwearing eyeliner and sense. Since he always had it, it's probilyprobably a part of his being, like a trait that was pastpassed down or it could be like a birthmark or scar like naruto s wiskers it's-like Naruto's whiskers. It's something like a scar of being exposed and I can't help but notes narutonote Naruto has whiskers close resemblance to the fox btw.
By the way, fox and dogs do have whiskers as being the shape of an animal, but gaaraGaara has trouble with sleep his. His demon could take over in his sleep. I just looked at a picpicture of the one tail to look at his eyes he. He has like raccoon eyes, just a black patch with pupils, so these marks have a close resemblance to the tail beasts they have and for.
For the guy that said the black is just the eye shape, eyes aren't shaped like that it. It is way too thick unless youryou're telling me the edge of his eye balls areeyeballs is just that big. I don't think it is shoot. I just notecednoticed he dosntdoesn't have any eye brows some oneeyebrows. Someone also said it stayed on his sand armour greatarmor. Great job on noticing that this. This just might help with the answer that it's a scare markscar-mark of some sort because if you look at narutoNaruto, his whiskers grow when he starts to form. I'm positive his eyeliner is a resemblance to the one tailed-tailed eyes.