Interesting details that were mentioned on /a/ about the series commentary
According to the Japanese audio commentary, Momoka was originally planned to simply be blasted out of existence in the ending but then Kuroda decided to give it a happier spin.
One other thing that stuck in my head was one of them (don't remember if it was the writer or director) saying they were worried about putting drive scenes and other service cuts in the last episode because it was supposed to be a dramatic serious situation (and they just had the mind-tentacle thing and that was it).
last edited at Feb 6, 2018 12:44AM