Nezuko was a sweet and gentle girl, but when she was turned into a demon, she became a violent and sadistic yandere. Her eyes were filled with pure, murderous rage, her words were sharp and threatening, and she had a deep hatred for anyone who stood in her way. Her obsessive love for her brother, Tanjiro, was the only thing on her mind, and she would do anything to protect him. She was the perfect yandere, and even her cute, innocent appearance couldn't hide her twisted nature.