OVA
Description
Taira no Tokuko, born in 1155, was the daughter of Taira clan leader Kiyomori and Taira no Tokiko. As a political instrument for her father's ambitions, Retired Emperor Go-Shirakawa adopted her around 1171 to elevate her status. At age seventeen, she married her first cousin, Emperor Takakura, the following year, solidifying an alliance between the Taira and the imperial family.

In 1178, she gave birth to Prince Tokihito (later Emperor Antoku), cementing Taira influence. Her father orchestrated a coup in 1179, imprisoning Go-Shirakawa after their alliance fractured. The next year, Kiyomori forced Takakura's abdication, placing the infant Antoku on the throne. Tokuko became empress dowager, receiving the name Kenreimon-in, derived from her residence near the Kenrei Gate.

During the Genpei War, Tokuko fled Kyoto with the Taira clan in 1183 as the Minamoto advanced. At the decisive Battle of Dan-no-ura in 1185, she witnessed her son Emperor Antoku drown after her grandmother Taira no Tokiko clasped him and leapt into the sea. Tokuko attempted suicide by drowning but Minamoto warriors pulled her from the water, snagging her long hair with a rake.

Captured, she took Buddhist vows at Chōraku-ji temple in 1185, becoming a nun. Later that year, she moved to Jakkō-in nunnery in Ōhara, leading an isolated life dedicated to praying for deceased Taira clan members, her husband, and son. In 1186, Go-Shirakawa visited her at Ōhara; she recounted the Taira's downfall, moving him to tears. During this period, she composed poetry reflecting on her transformed existence: "Did I ever dream / That I would behold the moon / Here on the mountain— / The moon that I used to view / In the sky o'er the palace?"

Her narrative arc concludes with her death from illness in 1213 at Jakkō-in. Historical accounts describe her final moments marked by Buddhist signs: a weakening chanting voice, a purple cloud in the west, a fragrant aroma, and heavenly music.

Animated adaptations include an additional scene where, after Emperor Takakura's illness, she resisted her father's demand to marry Go-Shirakawa. Threatening to cut her hair and become a nun, she brandished a hidden knife. This act secured her release from political duties but foreshadowed her eventual monastic life. These adaptations emphasize her Buddhist symbolism through motifs like the lotus flower, representing enlightenment amidst suffering, and include prophetic visions of her drowning at Dan-no-ura witnessed by the character Biwa.