Attack on Titan: Beyond These Walls

Well, I kind of saw this coming. This is insanely spoiler-filled, and from the manga, so if you want to avoid messing probably the best twist this series can pull, I would highly say, ever, steer clear.

Surprisingly Complex: Attack on Titan / Shingeki no Kyojin

Okay, so for all you in there, and I can expect a LOT of attention for this one, hopefully, I have a confession to make. This series never surprised me, not once. But, it doesn't really matter, because the most fun part was just watch things unfold, as this time it was fun to watch the characters be surprised by some of the kind of obvious twists (Unlike... Something like Lain). Oh, the Titans were human all along? What a fucking surprise. Oh, and they were... Okay, I'll go into that later.

So, as you can tell, this time I'm tackling things that may or may not come in Attack on Titan in the future, of which hints have been thrown around for the whole series. And what do I mean specifically with "Beyond these walls?" This is all just some insane theory, so... Do apply critique.

That's pretty high-tech stuff for year 850

Let's start from the beginning. From the year 0 in fact. We know, that something has happened that has reset the calendar. Why would they otherwise have such sophisticated technology as 3D-Maneuver Gear? Of course it's possible that if history had skipped the "Dark Age", technology of those sorts could make sense. Anyway, this is just a side thing, so...

The Great Lie, Part 1:

We've been lied to. The history that has been told to the characters, and as such, us, has been altered. If the calendar has been reset, it had been done way before Titans came into play, implying that there are things in the past that we are completely oblivious about. This is not much, but it gets better.

The Great Lie, Part 2:

Okay, it has been established that Titans once were humans. It has also been established that humans can be turned into Titans (Connie's hometown), in a short time. We've also seen that Eren's father gave him some serum that made it possible for him to become a Titan shif-. But wait, aren't those two things kind of different? I'd say no. I would suggest that once upon a time, someone invented the Serum A, which turns people into titans, and Grisha (or someone else, more on that later) invented Serum B, which turns people into Titan Shifters.

So where's the catch? It was always about people turning other people into titans and turning them against other people. So, where does this lead?

The Great Lie, Part 3:

The Titan War. Wait, that's not anything the series has ever mentioned?! Exactly. There was most probably a war between two nations, other being some unknown force, and the other being the people who are now within the walls. See where I'm going with this? The Unknown force had invented Serum A, and now that we know that Titans can be controlled, they probably used them as a weapon of mass destruction upon the other country. It also explains why the Titans don't actually eat people. And here comes the fun part. We know that the walls are made of Titans, right? So... What if the walls had another reason to exist. What if... They aren't there not to keep the Titans out, but to keep the people inside?

So, what exactly is beyond Wall Maria?

Where does this lead then? To a measly fact that what if outside these walls, there is a peaceful land without the fear of Titans, without the restriction of the walls? A land which uses Titans as a tool to keep the people inside the wall in check, so they can't come hinder their lives?

The Great Lie, Part 4:

So... What sense does this make? Why would the people of the outside do something so cruel? Because the high-ups inside the walls are stubborn dicks who don't want to cooperate. There may be still a war going on with the other nation, we just don't know of it.

So hey, what about Titan Shifters? What's their deal? Well, in short, Grisha invented Serum B. It's hard to pinpoint why, but it's possible that he escaped, and took documents with him, got captured by the other nation, and was imprisoned, but now the unknown force had the Serum B. It may also be that Grisha was a citizen of the other nation all along, which diverges to 2 paths: 1) After the Attack, he panicked because he knew where the attack came from, and escaped out of fear of being found out. 2) After the attack of Shiganshina, he injected Eren with the serum, and left to kill those sons-of-bitches, and probably put the same serum to his own veins. Of course the last one is the most epic, so... Why not?

The Great Lie, Part 5:

Well, this is just tying some loose ends. So... We've seen Reiner and Bertolt getting their friend eaten by Ymir, who probably had taken something like the experimental Serum B (This supports the theory that Grisha is from somewhere else and didn't invent the serum. Or the Serum B was only completed when they got Grisha) which screwed her up pretty bad, as she couldn't turn back into human. It's possible that because of that, she became a rampant Titan where Reiner and Bertolt lived (Which may actually be outside the walls).

So, what do you think? Too far-fetched?

TL;DR?

Titans are probably a weapon of mass destruction. Also some insane theory of an other nation or something.

E: Shit, plotholes. Gotta... Repair...

E2: Why did I split this into parts, again? I dunno.