The Queen Mother is King Ei Sei's mother and commands the Royal Harem faction. She was once celebrated as the "Jewel of Kantan" for her striking beauty, and was engaged to Ryo Fui at the time. He eventually handed her over to Sei's father as a concubine—a calculated political move to secure future advantages.
Both she and young Sei were held as political hostages in Zhao, where they endured brutal conditions. The hardship warped their relationship; she came to resent her son and even made an attempt on his life. When Sei managed to escape Zhao at age eight and seized the Qin throne, the Queen Mother was brought to the capital alongside him, where she rose to lead the Royal Harem.
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