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Description
Ōtomo no Yakamochi was born circa 718 in Nara, Japan, into the prominent Ōtomo clan, renowned for supplying imperial guards. His father, Ōtomo no Tabito, led the family until his death in 731, after which Yakamochi assumed leadership. His early years involved immersion in Dazaifu, Kyushu's literary circles during his father's posting there, significantly shaping his poetic development.

Following his father's death, Yakamochi entered the guardianship of his aunt, Ōtomo no Sakanoue no Iratsume, herself an accomplished poet. This era featured exchanges of love poems with court women, including his cousin Ōiratsume, whom he eventually married. He commenced court service in 737 under Emperor Shōmu, achieving Junior Fifth Rank Lower by 745. From 746 to 751, he governed Etchū Province, a highly productive period for his poetry. Numerous poems from this time, capturing nature and personal reflections, populate Books 17 and 19 of the Man'yōshū.

Yakamochi's political path encountered instability through court intrigue. In 758, following the Tachibana no Naramaro rebellion, suspicions regarding his involvement in a plot against Fujiwara no Nakamaro resulted in his transfer as Governor of Satsuma Province. Later, under Emperor Kōnin, he regained favor, rising to Junior Third Rank by 781 and attaining his highest post, Middle Councillor, in 783.

He is chiefly celebrated for compiling the Man'yōshū, Japan's earliest poetry anthology, finalized around 759. As its principal editor, he contributed 479 poems—46 chōka, 432 tanka, and one kanshi—constituting over 10% of the collection. His editorial efforts encompassed transcribing, refashioning ancient poems, and integrating folk songs, like those of frontier guards (sakimori uta). His own poetry explored varied themes: love, nature, mourning, and social empathy, merging traditional forms with melancholic tones.

One poem, later featured in the Hyakunin Isshu (Poem 6), portrays a frost-covered "Bridge of Magpies," evoking either the Tanabata legend or palace bridges. Its authorship remains contested, as it appears not in the Man'yōshū but in the posthumously compiled Yakamochi Shū. Another notable piece, "Umi Yukaba," evolved into a military song during the 1930s–1940s.

Yakamochi died on October 5, 785, in Mutsu Province while serving as shōgun. Posthumously implicated in Prince Sawara's alleged assassination of Fujiwara no Tanetsugu, he was stripped of rank, denied burial rites, and his family estates were seized. His son endured exile until their pardon in 806, an event that potentially enabled the survival of the Man'yōshū manuscript.