One of the things I like in Isayama are his hints, and people will walk beside it again I feel like he's literally spoiling it me with this
I don't if you notice what I see here but it's just "UWU EMA KAWAII BABIES OMG" nah sweeties Okey but it's not the message here lol

They're NOT LOOKING AT THEIR OWN YOUNG VERSION, THEY'RE ALL LOOKING AT => YOUNG EREN !!
it's definitely a HUGE spoiler (that match with what I'm saying all this time)
Mikasa and Armin will wake up Eren and make him look deeply at his young Eren and the freedom he's seeing

Eren here will face internal issues in the next chapters debating with himself what "Freedom" really is??
As Armin said Is't really this one? The freedom where he hurt Mikasa? Or as Eren indirectly said in Ch121
His real freedom and happiness is MIKASA then Armin not Revenge

Mikasa & Armin will wake up Eren who's under Ymir's control since the start, and make him realize they're his real freedom!
He gonna be free at the end As we already saw the last panel of Grisha "You're free now" but that DOESN'T mean he gonna die his freedom is Mikasa not