Shinyao Mu is an 18-year-old Chinese student who relocates to London against her parents' wishes to attend university with her best friend Ton Baileu. She possesses chest-length brown hair, brown eyes, and consistently incorporates a hat into her attire. Her carefree and accepting personality allows her to readily acknowledge supernatural entities called Umbras after encountering them.

Shortly after arriving in London, Haysin orchestrates her kidnapping through Chris Bowen, aiming to manipulate Ton into awakening her inherited magical abilities. During captivity, Chris transitions from captor to protector, shielding Shinyao from harm while developing genuine concern for her safety. This abduction critically motivates Ton's subsequent actions.

Shinyao shares her strongest bond with Ton, regarding her as her closest friend. Their relationship thrives on mutual support, with Ton risking her life to rescue Shinyao when endangered. Her captivity further reveals complex dynamics with Chris as their interactions evolve from adversarial to protective.