In chapter 120 Eren and zeke are traveling through their memories, it is possible to notice that they are not physically in the places but Grisha and the baby Eren seem to notice them. This draws attention to chapter 12, at the end of this chapter you can see the silhouette of two people behind two barrels, I believe it could be Eren and Zeke traveling through memories.
Well, according to Zeke they are specifically travelling through Grisha's memories and Grisha is dead by then. There's no reason for Zeke to be taking side trips through Eren's memory since the whole point of the journey to convince Eren that his dad did a bad thing to him and Battle of Trost was past Grisha's expiration date.
Yes, so far Grisha is dead, but in the future if Eren tries to convince Zeke there is a possibility that Zeke would see what Eren's life really was like inside the walls, a life where he is not "manipulated" by his father as It was with Zeke.
I agree that Eren is hoping that Zeke will see that Eren's life wasn't so bad, but I don't see what that has to do with the image from Chapter 12. Zeke is the one bringing up the memories, so there's still no reason for Zeke switch from Grisha to Eren's memories. Eren's just along for the ride.
Look at the zoomed image, it is different from the top model and it seems to have body and head, if you look at the silhouettes below there is a window but it is at the head of the silhouettes.
The red region corresponds to the window, below it you can see that it is the rest of the wall. I think it has a good chance of being them, isayama left several hints of future events in its chapters in a very discreet way, in the first chapter we see Eren waking up from a strange dream that maybe we will have the explanation in the next chapters, the Reiner Leaving a message in Annie's hand, Attack on titan is a story that Isayama already had the beginning and end planned with modifications here and there.
That squared red region is just like the more rounded region of the window above. It doesn't surround the whole window, but only the upper part. If that tells us something, it's that the window is bigger than that (also, it would be a really weird shape if only THAT were the window).
I understand what you mean, but this window is very strange, I mean, it has the same shape as a human body. Two barrels in front, I believe to make it difficult to see the feet. Another thing is that all windows have white borders on the sides and underneath, the upper window has white borders on the right and underneath, but where there should be borders on this "window" dont have, and where would show the borders underneath it we have the barrels. I'm really trying to see this as a window but once I see it as two people it's hard to see how else.
That "human" shape such a common one. Those are just the two arches of a type of window called bifora (see pic). Also do you mean you can see the upper window as a window, but not the lower one? It's got the same features, they're just less exposed due to the shape of the frame.
(I'm not saying the bifora in this picture has exactly the same structure as the one drawn, but the shape of the two inner arches varies a lot from case to case, and it can very well resemble a human shape from afar)
Also, in the anime, the debate about it being windows or two people isn't relevant anymore as the street seen at the end of chapter 12 isn't in the anime. And if I take the anime as a source, it's because it is more canon to the story than the manga itself (apart from season 3 part 1, with all the changes), because Isayama fixed a few things in the anime. If he wanted to show two people at the end of chapter 12, then why he would have asked for them not to be shown in the anime?
I had gone to see the anime and really didn't find anything like it. If it really is Eren and Zeke, titan topped the "window" and the barrels. I don't know what the Attack on titan manga animation deal is, if Isayama is directly powered on or if only he wants a faithful adaptation to the manga (If it's the second option, I wonder why they didn't animate the supposed "window", I I know that some details are really irrelevant and there is no need to animate completely like manga). It may have been difficult to animate the "window" and barrels without looking like "people," since in Isayama's art the window is questionable, said his drawing ability (I'm not saying it's bad, but at least at first it was a little weird).
This part in the anime wasn't completely animated like in the manga, as in the manga you can see people in the window.
I believe it is unlikely, but not impossible.
Again. Sorry for the English, its not my native language.