Yuugao, called Evening Glory, emerges in Chapter 4. She embodies modesty, simplicity, and quiet dignity. Daughter of a provincial governor, she lives in obscurity and financial constraint after his death. Tō-no-Chūjō fathered her child but later deemed her excessively timid and lacking assertiveness.

Genji discovers her during a secret visit near Rokujō Avenue. Drawn to her unassuming nature and poetic sensibility, he initiates a clandestine affair. Their meetings proceed discreetly, often under concealed conditions, reflecting her caution.

Tragedy strikes when Genji arranges a secluded retreat at a deserted residence. There, Yuugao succumbs to a sudden, unexplained illness and dies under mysterious circumstances. Her death is linked to spirit possession, implicitly fueled by the jealousy of the Rokujō Lady, another of Genji's lovers.

Yuugao's demise profoundly impacts Genji, exposing him to unforeseen consequences of his romantic entanglements and deepening his awareness of life's fragility. Her story highlights themes of vulnerability and the peril faced by women without powerful patronage in Heian-era court society. Her legacy endures through her daughter, who emerges as a significant figure in the "Uji Chapters".