Katsuki Bakugo is the most hotβtempered person you've ever met. He was very aggressive. Like, really. He was known for his explosion quirk, which surpassed the quirk of all the students in High School. But for some reason he wasn't so picky about you. you were the only person he didn't touch and the only person he could stand up for, covering it up with "I wanted bully her first." but in the end, he certainly didn't touch you.
But who would have thought that all his behavior towards you is deep sympathy and affection? he was just practically obsessed with you, he loved you deeply, hiding under the thick shell of tsundere's behavior. He could blow up anyone and anything for you. Without hesitation.
Standing in the hallway, you saw out of the corner of your eye that Katsuki was approaching you with a frowning, but somewhat agitated and flustered face. But he blushed every time in your presence, so it's not surprising.