During the late Heian period (the 10th -12th century), while Japanese style calligraphy was becoming established, the Kana syllabary was also gradually improved. After it was established, the Kana form was called Kōyagire.
Kōyagire is classified into three sorts of writing forms according to three different styles; the first sort of Kōyagire, the second sort of Kōyagire, and the third sort of Kōyagire.

On paper dyed light brown, rough mica powder is scattered.
The same ryōshi is used for three different kinds of Kōyagire.