What person is The Narrow Road to the Deep North written in? Is it an autobiography?

Matsuo Basho's The Narrow Road to the Deep North is written from the first-person point of view. He was born in Japan, and the text of the story I found presented both the Japanese and English versions together. The text tells of his and Kawai Sora's travels through Edo, Japan (modern-day Tokyo) to Ogaki (also in Japan). The text follows Basho along in the form of what he calls a "travel diary." The intent behind the journey was to witness and visit the places prior poets (ones Basho admired) had seen.
The text is readily identified as a first-person narrative based upon Basho's use of pronouns. He uses the pronouns "I" and "we" to describe his and his traveling partner's (Sora) journeys.
His journey takes place in 1689. The journey, which took 156 days, details the scenes and people Basho and Sora came across. Basho begins many of the entries with the date (the number of the day he is on for his journey). The text, spattered with poetry (many in haiku), details the mountains, rivers, and villages his travels allowed him to experience. Therefore, readers are not only entertained using prose descriptions of the scenery, they are entertained with his poetic voice as well.
Technically, one could identify the text as autobiographical. By definition, an autobiography is a first-person text written to tell of that person's life (from his or her perspective). Therefore, while Basho defines his text as a "travel diary," a more common term would be that of an autobiography.