This can be found in texts copied in the Sogana style of calligraphy at the end of the 10th century and are represented by texts descended from ONO no Michikaze's "Akihagi-jo."
10世紀末ごろの書写と見られる日本の書道史草仮名の遺品であり、『小野道風秋萩帖』の系統に代表される。