Touka's personality is initially defined by her duality between rage and kindness, with her character arc centred around that rage fading as well as her kindness coming to the fore. She is inherently kind, but this was repressed due to her losing her father and thus having to survive in the ghoul world from an early age, which required her to be ruthless. As Shuu Tsukiyama notes, she had previously looked more dangerous and cold but has somewhat softened up because of her human life.