Board Thread:Manga/@comment-6707115-20200830191237/@comment-33077628-20200905011719

What's happening in the story right now is unprecedented inside the story as well. As far as we know, no one has ever been able to achieve a power as close to Ymir's as Eren has. We know he seems to want to free her, and if he's able to do so, maybe the curse of the titans will be over, but since the story has been advertised as a tragedy for some time, there's a good chance the curse won't end, so that one day history may repeat itself.

If the curse doesn't end and things continue as they were, when Eren dies, the Founding Titan will be passed to another random Eldian. If the Royal bloodline survives, one day one of them may want to seize the power of the Founder. Eventually, the ones who inherit the powers of the Titan shifters will end up using it to wage war, as they have always done.

Now, considering we know the story draws a lot of symbolism from Norse mythology, we know this is this world's Ragnarok, and so there's a reasonable chance that this will be the end of everything, and maybe the world will restart anew.