Jiyun Tanmoku, also referred to as Tanmoku Jiyun or Jiun Tanmoku, is a female character from the anime Spiritpact. She is the legitimate daughter of the Tanmoku family, a prestigious household of exorcists known as Youmeishi.

In terms of appearance, she is depicted as an adolescent with purple eyes and long, purple hair that reaches her waist. Her demeanor is largely defined by her ambition and her position within the complex power structures of her family. While she does not openly bear a grudge against her relative Ki Tanmoku, she is not a supportive ally either. Instead, she operates with a focus on her own interests, choosing to follow the decisions of the family matriarch while simultaneously plotting behind the scenes. Her primary motivation is to usurp Ki’s position and claim the role of the next head of the Tanmoku family for herself.

Within the story, Jiyun serves as an antagonist and rival to Ki Tanmoku. She holds considerable spiritual power as a Youmeishi, though it is noted to be less than Ki’s. Her role often involves creating political and supernatural turmoil for the protagonists, as she does everything in her power to claim the master’s position. Despite her scheming nature, her character is not entirely one-dimensional. In later story arcs, she demonstrates a more complex role, such as arriving at a critical moment to stall an enemy, helping to turn the tide in a battle against a significant threat.

Key relationships include her rivalry with Ki Tanmoku, whose position as heir she seeks to undermine. Her actions are also observed by other members of the exorcist noble families, who eventually surround her as part of the ongoing conflict. While her exact abilities are not exhaustively detailed, it is established that she wields considerable Youmeshi power, which is the spiritual energy used by exorcists in the series to fight evil spirits.