Touka Miyama is the main protagonist of the visual novel 'Shirotsume Souwa.' She is a quiet and mysterious girl who transfers to a rural school, where she gradually becomes involved with the other main characters and the unfolding supernatural events. Touka is known for her gentle demeanor and hidden strength, playing a central role in the story's emotional and mysterious atmosphere. Her character development is key to the narrative, as her secrets and inner struggles are gradually revealed.