Kuumi Tobita

Makoto's younger sister. She exterminates yokai and is confirmed to be a sadist, enjoying both Mana's and her brother's screams the most. She is an accomplished swordsman, her preferred weapon is a spiritual sword forged to specifically fight divine class spirits. While it cannot wound humans it can still make them feel the pain of getting cut (demonstrated when she stabs Makoto). A weapon well suited for her morals and sadistic nature.