So yesterday I was rewatching Angel Beats and when I got to episode 12, a sudden horrifying thought dawned on me in regards to the alternate ending. In episode 12, we learn that (Angel Beats anime spoilers) the programmer behind Angel Player entered the purgatory in the same fashion as Otonashi: with amnesia. This was due to him being able to live a fulfilling life for the sake of another. Then the programmer fell in love with a girl who disappeared after fulfilling her regret, resulting in him waiting for her in the purgatory for a long time. But as a result of waiting for too long, the programmer turned insane and created the Angel Player program with the patch that should a situation like his occur where a person enters the purgatory with amnesia and has lived a fulfilled life, then the Shadows would arrive and turn anyone into an NPC with the programmer himself turning into the first NPC.
So what’s the horrifying thought? Well if the alternate ending occurs, where Otonashi stays behind in the purgatory and waits for Kanade’s return, then he’s probably going to wait for a very long time. Like the programmer, this might result in him losing his sanity, recreating the Angel Player program again with the Shadows patch, and turning himself into an NPC. In other words, if the alternate ending occurs, then there’s a huge possibility that everything that happened in Angel Beats (the anime at least) is going to repeat itself and it might become an endless cycle. Man, forget about the Stairway to Heaven OVA being the bad ending, this is the actual bad ending.