紀貫之
During the Heian period, the imperial court was a vibrant center of high art and culture. Its literary accomplishments include the poetry collection "Kokinshū" and the "Tosa Diary", both associated with the poet Ki no Tsurayuki, as well as Sei Shōnagon's collection of miscellany "The Pillow Book", and Murasaki Shikibu's "Tale of Genji", often considered the masterpiece of Japanese literature.