Mia Silverstone is one of five main protagonists within the Crystal Radio Research Club. She joins her friends in performing the 4:44 ritual at the Akeyuki Sacred Tree, an act that triggers unexpected interdimensional travel.

Initially embodying a shy archetype, Mia confronts profound personal challenges within parallel worlds. These experiences catalyze significant growth, shifting her toward actively pursuing justice and directly facing her own vulnerabilities.

Physically, Mia possesses long gray hair reaching her hips and distinctive yellow eyes. As a teenage high school student, her journey spans various fragments where she encounters alternate versions of herself and others. These interactions reinforce her evolving self-acceptance and determination.

The narrative dedicates specific arcs to each protagonist. Mia's journey transcends an initial stereotypical portrayal, moving toward greater complexity and enhancing the story's depth. Her developed resolve to fight for what is right becomes a defining aspect of her role in the group's collective effort against the Twilight threat.