Dad For One Is Now Less A Theory And More A Confirmation With Every Chapter - Blog Posts

So it looks like this chapter does confirm that All for One did feel remorse for Killing Yoichi, and we know he killed Yoichi cause it's been stated All for One killed all the past user except for the forth. Considering this is the first time we've every seen All for One cry, it's pretty safe to assume All for One, for how messed up it was, did love his brother.

What interesting here is that All for One is showing cold anger, he's crying but his face is completely stoic, and even when a bullet was aimed at his head he barely reacted. He basically shut himself down, his normal shading around his eye is around his lower face, so we can only see he's eyes. This is the closet we have ever gotten to All For One being humanised in some way.

Ironically here All for One reminds me a little of how Izuku was looking/acting during the Villain hunt arc, clearly upset but shutting down all other emotions so he was emotionless. Which is interesting cause it means AFO was trying to get Izuku to act like him when he lost Yoichi, which explains why Izuku was starting to look like a villain more specifically like a demon.

All for One was literally turning Izuku into an earlier version of himself because he knows that the version of himself that lost.

I make a longer meta on how Izuku is a "good" version of All for One and how Tomura is an "evil" version of Yoichi later, but TLDR I think AFO plan is to recreate the battle between his brother and himself but switching the roles so that he wins the battle instead.