I'm sorry, but I've been waiting for this moment since I began to read the manga.
Look at his eyes while he's marching to where Deku is while ignoring his classmates and probably the pain that his injuries are, very likely, still provoking him.
I'm not looking at this panel only with the eyes of a shipper who is reading an exciting passage form a well-written fanfic (because for how long I thought this Bakugou was only gonna happen in the magical non-canon world).
I'm looking at it seeing the continuation of what has become more undeniable throughout this arc: Katsuki's growth.
I've already written in another post how he's beginning to show to people he's close to that he cares for them. However, here I want to focus on how his growth is affecting his relationship with Deku.
He's becoming more open (to himself and to others) about his feelings towards Izuku. I'm not necessarily talking about romantic feelings. I mean that he's seeing him for who he is after all these years, without the fears and the anger that altered his vision before. He's caring for Deku, as I believe he always did, but now he doesn't fear to show it.
And this isn't even the first time we've seen him this way. We've had a lot of examples in the last chapters, beginning with the flashback of their training with Ochako, Sero and Tsuyu.
He's worried that Izuku's way of always putting others before himself has now eventually provoked some significant damage.
Serious talk aside...
PLEASE, PRINT IT ON MY FACE FOR THE WORLD TO SEE