Modern day therapy group Evangelion AU, mostly Kawoshin but focuses on the friendship of the four Eva pilots as well. Art by tumblr user kittypng!

In a dystopian world scientists have created a drug that can temporarily kill you. After they give this drug to "volunteers" with special machines they can monitor them in the afterlife in their effort to answer humanity's number one mystery: What comes after death. Though experiments keep failing with the volunteers waking up with no memories, traumatized and shocked to the point they never talk again. Shinji and Kaworu are different though, they didn't wake up at all. At the same time everyone thinks they are dead and never coming back, they desperately try to find a way to come back from the spiritual world they ended up together.

Everybody finds happiness, in the end. Shinji and Kaworu meet again in a world where no angels need to be fought or evas to be piloted and everything seems perfect until Kaworu finds out that Shinji suffers from heart failure. As they both struggle to find happiness, Shinji tries out different treatments until only to be left with no option in the end.

Shinji Ikari goes to NERV, a private school, and meets a certain pale boy called Kaworu Nagisa. They're both very antisocial teenagers who immediatly become glued to each other. Also, they're soulmates, but none of them are aware.