Christ, I teared up at the last few minutes.
I didn't understand the scene after the credits though. Who was that Gasai Yuno? I assumed it was the third worlds Gasai Yuno who won her Universes game, and travelled to the second Universe when she became god.
The manga has one more *very important* scene that for some reason they didn't animate. You could wiki the summery or check out the final manga chapter online here:
http://www.mangareader.net/mirai-nikki/59 ('bout half way through but it's mixed with some of the scenes in the anime)
My only guess is that because that chapter of the manga was coming out about the same time as the final episode was airing, they didn't want to spoil the ending of the manga but I'm not sure.
I think it's worth reading to get that scene, especially for the last page with content on it.
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I read it. I honestly like the ambiguous nature of the anime ending better, even if it isn't perfect. The manga ending felt like a bit of a cop out to me.
The time is now, rise up from destitution
We won't lay down, resist the persecution