Hi Izuku! I've been waiting to meet you! You know what would make it better!? More blood!

You're bleeding already, Tsuyu, my good friend! Isn't blood cute? I love it so

Of course you wanna be like the one you love. It's natural. So you end up decking yourself out to look like him. But after enough time, even that's not enough. You literally want to become him. There's no helping it.