[天元]在我忘记的时候她又死多一次

引用

(Via a Simon X Nia fangirl) Simon and Nia had some together time before the wedding after the final battle right?
Simon and Nia had exactly 7 days to enjoy time together before the date of the wedding. They went to an island. (Fangirls squee in the back)

On Nia's death
Nakajima (Scriptwriter): In the one week after coming back to Earth, Nia held in her tears and put up with it. As long as she thought "I am Nia!" she should be okay, like if she achieved a recognition of her own existence in the world. Still, after the Anti-Spiral disappeared, it became more like "Huh...? I...am Nia?" as she started doubting her own existence.

Kubota (Key animator): Honestly speaking, I was really depressed after reading the script for the final episode. I thought to my self, "They went through so much just for this?! Isn't it just unfair?!"

Imaishi: "It was still rather hopeful... She should have disappeared right away but she was able to hold on."

Kubota: "I still think they deserved better..."

Nakajima: "Nia decided to let herself go, it was painful for her to keep on living. Besides she didn't wanted Simon to extend her life as it would only bring forth what she fears as the Spiral Nemesis."

"Both Simon and Nia agreed to it and kept to their conviction, so there's no bitterness or sadness."

Ootsuka: "You would feel a lot of empathy for Nia near the end. Nia tried her best the whole time, and thanks to that they were able to defeat the Anti-Spiral, and on top of that, when she was supposed to disappear, she tried her best to continue living up to the wedding ceremony to fulfill her promise (marriage) to Simon from the beginning of the 3rd arc. We understand that everyone wanted to see Simon and Nia have a happy conclusion, but we want you to know that Nia tried really hard."