Attack on Titan: Shingeki no Kyojin

[DarthEnderX]

Admittedly, the weakness of that explanation is "where did that divine parasite come from and get his powers from?"

It's Jenova/Ten Tails.

However, we're not at the end, so I'm worrying that Eren will not actually win in the end

I mean, he definitely won't. His plan is to kill most of the planet.

I do like just how infectious Eren's rage is.