This other world must not be the supernatural realm of the past and present as at the end of Chapter 13, nor can it be the world we live in.
The most valuable thing about those people in the afterlife is not overcoming, but acceptance. If the misunderstanding with the angels never goes away, if Yui and Hinata's love doesn't inspire those shadow programs, if they don't accept peace, if they don't accept the realization of their ideals and make themselves disappear, the life of curse and revenge will still last forever in this world non-stop. This is no different from those tragedies in the process of survival. Just using a stronger heart and a body that will never die, resentment, struggle, and unwillingness.
I remember watching "My Name is Khan", the wife finally said something to her husband: You use your love to accomplish what my hate can't do. Same goes for this movie. If the person who created the angel player can accept the reality and believe in love, maybe this afterlife world can become a brand new country. Maybe people in this world can finally reunite and avoid the end of the song.
In the end, they all left, because they all chose to accept it, and they all disappeared willingly.
The living world is not the same. If you tell me, tomorrow you will die. Of course I will hate that I still have so many things to do, and I am not reconciled if I do not finish these things. Why are you taking my time so much. But the world after death, this world that doubles back the time to you, will it really exist?
I said before that people are afraid of death. But I really feel it now. If I have accepted everything and done as much as I can with my life, then I can die willingly. Don't be afraid anymore.
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