The grandmother embodies a maternal role in the family. She appears in flashbacks interacting with her daughter in childhood. During one sequence observed by Kun through time travel, she disciplines her young daughter for scattering toys and food, establishing boundaries and teaching responsibility. Later, she is referenced in discussions between Kun and his mother, where her daughter reflects on their past relationship. In these conversations, Kun's mother recognizes parallels between her own childhood behavior and Kun's temperament, noting the grandmother's handling of these challenges. Her presence forms a generational link, revealing recurring patterns of parenting and childhood experiences. Kun's temporal encounters with her past actions deepen his grasp of family dynamics and his mother's perspective.