Haruko Komori is the mother of Chiko and Hina Komori. Due to Tickle's magical influence manipulating family memories to establish her as Chiko's twin sister, Haruko serves as Tickle's guardian. She accepts Tickle unquestioningly into the household. Within the family structure, Haruko functions as a supportive and caring presence. Her interactions consistently reflect a nurturing parental role toward Chiko, Hina, and Tickle. The memory alteration prevents her from recognizing Tickle's magical nature or true background, maintaining the illusion of an ordinary family life.