Himari Noihara  

The Crimson Blade of Noihara, 野井原 緋鞠

The Crimson Blade, also known as Himari, is a cat demon who played with Yuuto during his childhood when he stayed at his grandparents' house. She possesses the ability to transform from human to cat, even partially, featuring a human body but adorned with feline ears and tail. One of her ancestors was spared by an Amakawa demon slayer, leading her family to serve the Amakawa clan. Since childhood, Himari has been smitten with Yuuto and often flirts with him playfully. Despite being saddened when his parents took him away without a proper farewell, Himari remains fond of Yuuto. Interestingly, she is fearful of water where her feet do not touch the ground, but she enjoys baths and shallow rivers.