I just thought of Izuku immediately shooting up in the hero rankings like a week after he becomes an active pro-hero again because everyone is so happy that he's back and Katsuki wants to be annoyed that Izuku ranked higher than him so quickly like he would've been, once upon a time, but he really can't be because this is what he worked eight years to see, and now he can finally compete with him again. So he sits in his apartment, TV on, watching Izuku try not to stutter his way through his first returning interview with fondness and pride, and thinks it's finally time to put some actual effort into climbing higher on the hero rankings.
(Not that being #1 is his priority anymore. He's just happy that he gets to fight alongside Izuku again, that they can compete with one another as equals, and that they can complete one another like two sides of the same coin. For the rest of their lives.)
