Miao Miao serves as a close friend and classmate to the central sibling duo, consistently offering guidance and engaging in lighthearted exchanges that highlight her supportive presence. Her bond with the younger sister centers on navigating school life, where they navigate friendships, crushes, and typical adolescent challenges together. She actively joins group outings and school events, subtly shaping the siblings' interactions with peers through her involvement. While her role within the collective dynamic is well-defined, her personal history, family ties, and standalone narratives remain unspecified in existing adaptations.