All Foreshadowing and Easter Eggs in Attack on Titan: Season 1

This is me trying to enumerate all foreshadowing attempts and hidden easter eggs in the modern day masterpiece Attack on Titan (Shingeki no Kyojin).

The most insightful stories about Shingeki No Kyojin - Medium

That Day (Episode 57), Attack on Titan Wiki

us isayama foreshadowing something in these last two pages of the manga ? : r/ShingekiNoKyojin

Top 10 Anime Scenes That Were More Important Than You Realized

Every Attack on Titan opening theme, ranked

Is there any other Anime or Movie that has the most or better foreshadow then Attack On Titan? : r/attackontitan

Attack On Titan Set Up Its Final War in a Subtle Season One Easter Egg

Attack On Titan Episode 78: Every Easter Egg & Reference Explained

Might be a bit of a stretch, but Easter Egg/Foreshadowing?? I rewatched season 1 again and this scene with the left leg reminded me of season 4. : r/attackontitan

The Updated Titan TV Man: Unveiling Secrets, Easter Eggs, Analysis, and Theories — Eightify

Attack On Titan Highlights: From Eren & Reiner's Spar To Kissing Historia's Hand - Here Are A Few Key Foreshadowing Moments In The Anime!