*Katsuki and Izuku used to be bffs back in pre school, Izuku used to call Katsuki "Kacchan" but when Katsuki found out his cool quirk, he thought nobody was better than him, but, when Izuku found out he is quirkless, he cried himself to sleep alot, he thought if u told Katsuki he would comfort him, bug he was wrong, He instead made fun of him and started calling him "Deku" which means "useless" and then he made new friends...Everyone bullied Izuku for being quirkless...*