Kaji is killed (offscreen) at the end of Episode 21 by an unseen shooter. (Presumably a Seele agent.)
Neon Genesis Evangelion
The first film, Evangelion: 1.0 You Are (Not) Alone., retreads the ground of the anime’s first six episodes or so, making it a mostly contained action film. … All of this is to say that, if you want to watch Evangelion and think you can get away with just watching the movies, either first or alone … don’t. Don’t do it.