Imagine if you live in a place where there is a huge wall that separates you from the man-eating giants, as well as the outside world, what would you do? Should he live peacefully inside the wall all his life, or should he risk his life and go outside the wall, just to see the outside world and understand the truth of the world?

This is the background of the story of "Attack on Titan". The protagonist, Allen, is a young man with a strong desire to explore. His famous saying is: Even if you can't get out of the giant wall for the rest of your life, you can still survive by eating and sleeping, but doesn't that make you a domestic animal? When asked why he wanted to go outside the wall, Allen replied: I want to know what the world is like outside the giant wall. I don't want to live in the giant wall for the rest of my life without knowing anything.

A very pure wish.

If you already know that there is a bigger world outside the wall, can you still stay inside the wall for the rest of your life as if nothing happened? For many people, yes. The wish of these people is to live out their lives peacefully. They don't want to know what the outside world is like. They only know that there are man-eating giants outside, and the wall is the only barrier between them and the giants. If you step out of the wall, you will die.

But Allen is different from these people. A seed has already been planted in his heart. "The world outside must be many times wider than the world inside the wall." Outside the wall, there will be "water of fire, land of ice, and snowfields of sand." Therefore, even if "just go to the wall, If you take a step outside, it may be a hellish world." Allen also wanted to let this seed break out of the ground.

Those who walk out of the wall may end up with a triumphant return as a hero, or they may return home defeated, or at worst, they may die. It is true that those who choose to stay inside the wall have a much smaller chance of dying than those who go outside. However, when changes in the outside world occur, and when a crisis strikes, people who have stayed inside the wall their entire lives and have never seen the outside world will be more likely to die. When the giant broke through the wall and entered, the garrison troops remaining inside the wall became the giant's snack. The only ones who could fight were the survey corps who had already seen the giant.

Whether to go out of the wall or to stay within the wall is a matter of outlook on life. There is no right or wrong. There is no need for those who stay inside the wall to sneer at those who go out, and there is no need for those who come out of the wall to sneer at those who don’t want to go out. Everyone chooses a different path.

The key question is, will the wall be breached? And when was it broken? According to Murphy's law, "If something can happen, it will eventually happen." Therefore, in the anime, the wall was finally broken. "On that day, humans finally recalled the fear of being dominated by giants and the fear of being trapped in The humiliation of the cage.”

For "the day when the city wall is broken", humans need to prepare in advance. Before "that day" comes, the real danger does not come from the man-eating giants outside the wall, but from the fear in one's own heart. This inner fear is the real "man-eating giant".