Lol, take it from a dude whose main username is White Shadow, and loves riddles
The answer is Shadow
It only appears where there is light, but if light has direct contact with it, such as a flashlight beam, it'll fade.
He was largely depressed, and tells people to wear black veils, so show that everyone has something hidden within us.
Juice world and wishing well
I’m not sure about this answer. I’m going to do some quick research and see if I can find the answer for you.