Kaworu Nagisa, When I watched this series the first time I was shocked at what happened to Kaworu. I felt like someone choose to send him to his death. 'They' knew what was going to happen. 'They' knew what Shinji would do and 'they' were counting on the guilt breaking Shinji down to nothing. When I watched it again, I thought that Kaworu knew what Shinji would have to do, but he also knew what would happen before the end. To me their friendship was what he chose.