Angel Beats (Spoilers)

The reasoning I read somewhere was since he lost his memories, his soul wandered for a long time before he wound up in that world. He even mentioned that he had no regrets about his life and his arrival in that world was an accident. So after he died, his spirit wandered with no memories and not knowing where to go. Then kanade shows up in the world instantly after she died and then him much later. This of course is just speculation but it makes the MOST sense out of all the theories so I stick with it.

I know that they continued in Japan on some Radio shows but it never got adapted to any Anime. There was some interesting stuff that apparently happened.

that sounds awesome ill have to look in to that thanks