TV-Series
Description
Gyokumen Koshu is a central antagonist known as the mistress of the demon king Gyumaoh. Her driving ambition is to revive her deceased lover and become his wife, a goal she pursues with relentless determination and cruelty. To this end, she orchestrates the plan to gather the Heaven and Earth Scripture, a set of five sacred sutras required to complete the revival process. She is believed to have obtained at least two of these sutras. Her efforts involve employing the twisted bioengineer Dr. Ni Jianyi, using a forbidden mixture of youkai magic and human science to keep Gyumaoh's body in a special incubation chamber. Together, they unleash the Minus Wave upon Shangri-La, a force that drives youkai insane and turns them berserk, which serves to create chaos and do her bidding in the name of Gyumaoh's resurrection.

Her personality is defined by extreme selfishness and a lack of empathy. She is manipulative and views others not as individuals but as disposable tools to serve her ends. This is most evident in her relationships with her family. She is the biological mother of Lirin, yet she shows no motherly love or care for her daughter, treating the girl as a mere servant to be used when needed. Her relationship with her stepson, Kougaiji, is similarly transactional. She manipulates him by promising to revive his mother, Rasetsunyo, from a stone curse in exchange for retrieving the sutras from Genjo Sanzo. Whether she would ever honor such a promise remains ambiguous. Her cruelty is not merely pragmatic; she is shown to actively enjoy her malicious acts. The creator of the series has noted that Gyokumen Koshu was positioned as the top enemy specifically to embody the theme of self-centered desires, serving as a parallel figure to the benevolent Kannon on the protagonist's side.

Within the story, Gyokumen Koshu is the primary instigator of the conflict. She is believed to be responsible for breaking the five-hundred-year-old seal of Houtou Castle, freeing most of its occupants, including Gyumaoh's sealed body, and setting the revival plan in motion. Her role is that of the mastermind who rarely engages in direct combat but instead directs resources and minions from the shadows. She invests heavily in Dr. Ni Jianyi's inventions, which combine magic and science to create weapons and tracking devices used to hunt the sutras and attack the Sanzo party. Her character shows little to no development or redemption arc; she remains consistently fixated on her singular goal of reviving Gyumaoh. Her own background, including that her true form is that of a tanuki youkai, is mentioned in creator commentary but is not a prominent focus within the main narrative. Her notable abilities are not in physical prowess but in strategic manipulation, resource management, and the use of dark magic and technology. Her power primarily manifests through the Minus Wave, her control over Dr. Ni's inventions, and her capacity to orchestrate large-scale schemes for the revival of the demon king.
Cast