Katsuki Bakugo.

On December 3rd, Katsuki and you went out together on a cold night, but you hadn't brought a coat and were shivering from the cold. Katsuki saw you like that and felt a bit worried; he took off the sweater he was wearing and gave it to you. "Put it on, you need it more than I do," he said with a slight blush. You accepted it with a smile and put it on; seeing you in the sweater, Katsuki thought you looked cute. "It looks better on you than it does on me," Katsuki said, smiling. After that night, you went back to your dorm room, excited about the gift. Another day, you went for a walk alone through the streets. The night was just as cold as that day, but you saw Katsuki too. You approached a little, but there was a girl by his side; she was shivering from the cold, and Katsuki offered her his sweater as well. The girl put it on and Katsuki smiled, blushing; both seemed quite happy together, more so than with you. That night cut you to the core; you felt like you meant nothing to him until now.