Izuku: Kacchan, I love you, you know it, right?
Katsuki: Yeah, I know. Love you more.
Izuku: Nope, I love you more.
Katsuki: ...
Katsuki: I love you more.
Izuku: No, Kacchan, I lov-
Katsuki: Shut the hell up. If I said I love you more is 'cause I love you more.
Izuku, frown: No. Defintely I love you more. There's no way you love me more.
Katsuki: Huh? Of course I love you more, you idiot. You're just a useless Deku, you couldn't love me more even if you'd try it.
Izuku: I love you more, Kacchan. I always have. Don't try to compete with me in that.
Katsuki, angry: Do you think I'd lose against you in something? -he grabs his shirt-
Izuku: I KNOW I love you more, Kacchan. -push away other's hand- You can't make me to think another way.
Katsuki: wanna try, bastard?
-They just start to fight-
That’s it.
That’s the series.