Demon Slayer is an anime. You’ve probably heard of it, because it’s very popular for its animation, and in my opinion its story and characters. Some background: So there’s this kid named Tanjiro Kamado who lived in the snowy mountains of Japan. He had a nice family, until disaster struck. He came back home after staying in a man’s home for the night. When he came back, his family was dead, murdered by a demon. All were dead but one, Nezuko Kamado. He then went on to protect her at all cost, no matter what happened to him. His goal was to kill the demon who killed his family, and to turn his sister back into a human. Also in this world there’s something called “Breathing Techniques.” There are five main styles, water, flame, wind, stone, and thunder. There are also other ones that people make up, like sound breathing, serpent breathing, Hinokami Kagura, insect breathing, and many more. Tanjiro would go over a lot of obstacles in order to get blood of demons for a cure, hoping to bring back his sister from demon to human.