Human Existence... 
Alright before anything else, I just want to say, this anime made me think. A lot. It also creeped me out. A lot. It's mainly on identity and human existence. It's a bit old but I'd say give it a try. It's only 13 episodes. It's called Serial Experiments Lain.
And remember... Looks can be deceiving.
The physical body exists at a less evolved plane only to verify one's existence in the universe.
CREDITS:
render
