紀貫之
The Tosa Nikki ("Tosa Diary" 土佐日記) is a poetic diary written anonymously by the tenth-century Japanese poet Ki no Tsurayuki. The text details a 55-day journey in 935 returning to Kyoto from Tosa province, where Tsurayuki had been the provincial governor. The prose account of the journey is punctuated by Japanese poems, purported to have been composed on the spot by the characters.