The film darkside blues is one of the most oddly put together anime I've seen.
Amongst other things it has a lanky teenage pretty boy named katari who's never explained. He implied to be developing supernatural powers which are never explained and has connection to another supernatural character which is also unexplained.
Also the last frame of the movie is him with a sinister look that's also never explained.
The whole film is a
mindfuck.It's like david lynch directed a seinen anime.