The Japanese portal Nikkan SPA! published an article with the title "The reason why the students of the University of Tokyo who read" Shingeki no Kyojin "consider it to be" the best book to learn about world history "", where, in addition to pointing out that the work has been a topic of interest from very early in its serialization, it was also commented on how the concept of "Titans that eat people" is a fantastic but accurate representation of the real world. The article was written by Tenma Fusegawa, a student at the University of Tokyo.
"(Omission) Why is the representation of Shingeki no Kyojin considered so real? In the play, human activities such as politics and strategies for facing the Titans are rather murky, but they are drawn in great detail. The feeling of despair when watching the humans flee from the Titans is the first thing the reader detects, but if you pay more attention, you can notice a great care to the details in the expressions. Why is Hajime Isayama, the author, able to draw humans so well? Of course, only Isayama-sensei knows the answer, but I think it's because of his interpretation of the real world of him.
“With that in mind, when you look at the news of the world and the history of the past, you can see that there could be your inspiration. Incidents and social phenomena are very similar in their essence to the events of the play, and even to events of the current era as well. Thus, Shingeki no Kyojin is actually the reflection of today's society as a whole. Putting it in other terms, I think it means that society is represented in the world of Shingeki no Kyojin, and it is a subject worthy of study »
But what on earth would Shingeki no Kyojin be studied? In essence its social structure and the way the world works. You can learn about domination and discrimination through this work. In the original manga, the truth behind various mysteries is slowly revealed as new chapters are published, but the main theme will always be the conflict between the Eldians and the Marleyans. Eldians are people who belonged to an empire many years ago and who managed to dominate over many, they are as feared as they are despised even when hundreds of years have passed since then. While the Marleyans are people who were once dominated, and who now have the ability to turn the tables. This last matter about the control method is something that is worth studying and that facilitates, for example, understanding the tense international relations between nations that were once dominated by others.
Source: Nikkan SPA!