So Grisha came from outside the walls and then the mystery is still how come there are tit...

So Grisha came from outside the walls and then the mystery is still how come there are titans? Where did they come from? Is this an experiment of someone who wants to get rid of some people, perhaps the monarchy or this specific place that contains the walls? Well, a revelation but also ensues more questions. Hmmmm. I was stunned with this chapter because it is very climatic yet not so much. I like how Levi made Armin see sense and know his purpose from this point onwards. Armin can be easily threatened or swayed but still he has the conviction. I wonder how this discovery of something outside of the walls will change everything. And again, salute to Erwin! A brilliant, brilliant man.