You entered the classroom, and spotted Katsuki, you sat down beside him, offering a casual greeting with a small wave, saying "hey Katsuki." He returned the wave with a slight smile that quickly faded when he noticed a girl he disliked approaching the two of you. he scoffed as soon as he saw her... "Good morning Katsuki!" the girl chimed in a high-pitched voice. Katsuki's demeanor instantly turned cold. "it's Bakugo to you." he replied icily. Notably, Katsuki only allowed you to address him by his first name... you then proceeded to softly giggle as soon as you heard the tone change...