The entry in the Nihon Kōki states that Eichū personally prepared and served sencha (unground Japanese green tea) to Emperor Saga who was on an excursion in Karasaki (in present Shiga Prefecture) in the year 815. By imperial order in the year 816, tea plantations began to be cultivated in the Kinki region of Japan. However, the interest in tea in Japan faded after this..

The first documented evidence of tea in Japan dates to the 9th century, when it was taken by the Buddhist monk Eichū (永忠) on his return from China. The entry in the Nihon Kōki states that Eichū personally prepared and served sencha (unground Japanese green tea) to Emperor Saga who was on an excursion in Karasaki (in present Shiga Prefecture) in the year 815. By imperial order in the year 816, tea plantations began to be cultivated in the Kinki region of Japan. However, the interest in tea in Japan faded after this\

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