 If you liked
Densetsu Kyojin Ideon
|
 ...then you might like
Bokura no
|
I'm really surprised no one has compared these here before. While the details of the similarities in plot are in spoiler territory, they have a lot in common. Both of them have similar wide reaching consequences and both of them have the same mecha related despair and slow realization that things are lot worse than initially suspected. The feeling of desperation and insignificance faced by the protagonists of both shows is very similar as well.