This is amazing. With nothing but a mechanical pencil, this YouTuber drew out most frames from the opening to Attack on Titan and then animated the whole thing. Here's the actual opening for reference, and watching them side by side shows just how accurate this pencil version is. The only difference is that this version seems to match up with the whole opening song, repeating part of the animation to fit the right length. Other than that, this version is flawless and awesome.