A trailer featuring a narration by Makise Kurisu, along with shots of the movie (presumably) and flashbacks of the series.
“By changing the past, you change the future. That’s something crueler than death. The proof that life and its meaning has all but vanished. I can’t control my memories. ‘Then we can’t. Without you, it’s not worth it!’ I’m a scientist. I have to act on my own theory and basis. I can’t let my emotions sway me. But there’s no way I can forget all of that. Because I’ve known you for so long. So very long. This is reality. This is the world. Okabe…it hurts…”