Enjun Sa is one of the three Grand Officials of the Palace, holding the title of Taiho. Sa-Taiho has held a long history of frustrated ambition, especially since the Sa clan has the least respect among the Eight Colored Clans. He never manages to surpass Advisor Sho, his longtime friend and fellow Grand Official. Most of Enjun's family lives in Sa province, including his wife and granddaughter. Enjun maintains a small household for himself in the imperial capital. After the orphaned young girl Kōrin collapsed in front of his residence eight years ago, he took her in and found her a position in the palace as a lady-in-waiting.
Enjun offers his granddaughter, Shunki, as a prospective bride for Ryūki; when she is rejected, Enjun plots to overthrow Ryūki and replace him with Seiran as a puppet emperor, knowing Seiran is really the exiled Imperial Prince Seien. Unfortunately, Seiran is unwilling to cooperate, leading to a confrontation in which Seiran fatally wounds Enjun with a thrown dagger just before being knocked unconscious. His treason further undermines the prestige and power of the Sa clan, and also encourages the emperor to move against its seat of power in Sa province.
Enjun's dying moments are tended by Advisor Sho, who discovered the conspiracy. Advisor Sho becomes guardian of Enjun's ashes and seals his friend Enjun's spirit inside the Sa clan signet. Enjun's actions are eventually revealed as a deliberate campaign to destroy the corrupt and power-hungry members of his own family, whose in-fighting killed his only son nine years ago.
