Beyond the Walls (Attack On Titan Fanfic)

Now we all know the Attack on Titan world. And also that Eren is a Titan shifter.

But......what would happen if he turned into a Titan by accident during his training days? And if he knew that all the answers to the Titans origin are in his fathers cellar?, which isn't that hard to get to with the help of the Survey Corps?

There's just one problem......

What if what they find in the basement wasn't what they were looking for?

(I would just like to say that this is a REALLY crappy summary of the story. I can't write good ones to save my life. Also, if you haven't read the manga or aren't up to date with it, it might be a little confusing but not that much. I'm trying really hard not to spoil at all, but it is pretty hard and there still are a few spoilers in the story, so if you haven't read the manga, I wouldn't fully recommend reading my story.)

*it does have a little bit of swearing in it, but that's it

Also, they will find the cellar and the origin of Titans is a little different from the one in the manga.