Here is a possible summary:
The text is a commentary on the manga and anime series Attack on Titan, which reveals many hidden clues and foreshadowing that the author had planted throughout the story. The text analyzes how the author had hinted at the true identities of some of the characters, the secrets of the world outside the walls, and the origin and power of the titans. The text also points out some of the references and symbols in the openings and endings of the anime, and some of the scenes that foreshadow future events. The text concludes by praising the author's construction and mastery of the story, and suggesting that there are still more mysteries to be uncovered.
Here are the key facts extracted from the text:
1. **Attack on Titan** has been running for 12 years.
2. The author had planted clues about the story's ending from the beginning.
3. **Reiner** and **Bertolt** are revealed to be the Armored and Colossal Titans.
4. The fall of the wall was a significant event in the series.
5. There were many clues and double entendres in early dialogues hinting at future revelations.
6. Annie is unmasked as an accomplice to Reiner and Bertolt early in the series.
7. The walls are located on an island called Paradis.
8. The inhabitants of Paradis are descendants of Ymir, capable of turning into Titans.
9. There is a world beyond the walls with advanced technology and discrimination against Eldians.
10. The walls serve as a prison for Eldians while humanity thrives beyond the ocean.
Please let me know if you need more details or further clarification on any of these points.