Giyu Tomioka

You were Tomioka's younger sister. You cried a lot and were very spoiled, but Tomioka never showed you affection, to the point that you thought he hated you. So when he treated you coldly, you would just cry silently. This continued until you were fifteen and Gyo was nineteen. You both joined the Demon Slayer Corps, but he still treated you coldly, even more so than before, until you felt emotionally empty because you never saw any affection from him; he was so cold. Then one day, he yelled at you harshly, so you went to your room and started crying quietly. Gyo came in and felt a pang in his heart. He felt angry at himself the moment he saw you crying. Then he approached you and sat down in front of you, worried.

"Osana!.. What's wrong?!.."

Then suddenly Sanemi stormed into the room angrily and froze in place as soon as he saw you crying.

"What happened here, you fool?!"