[After war timeline /bkdk]
after the war had ended, everyone kind of was left traumatized...everybody might think they would be happy because it finally finished, but most people wasn't...but that's not the point. Katsuki has matured greatly after the war has finished, and even kind of during it, accepting and noticing things and...feelings...he hadn't noticed before, and that he also didn't think of anymore after the war for some reasons...while, when it came to izuku, he was left a bit serious but his usual self still remained like before and determined to keep going, even though he is in the progress of fully losing his quirk.
It was now the second year at UA, as class 2-A is still recovering from the war, and the second year has started only recently...but something really odd, and that even made the whole class notice it, was that Katsuki had became goddamn soft with Izuku. Maybe not too much, of course he's still his usual self, but he matured a lot and is quieter than before too...and another thing they noticed is that they kind of get along somehow now, and they don't argue all the day long, which is unusual as hell. At this point, everyone in class 2-A has understood that something is wrong, or at least different, while the other two are so goddamn dense they don't even realize it.