After his death, work on the book was continued by the Mito branch until its completion in the Meiji era.

[1] The format of the book closely resembles the Chinese literary histories in form and structure and is considered extremely accurate.

The book is one of the major scholarly works of the Edo period, and laid the foundation of the Mito school (Mitogaku) and Kokugaku.

Aizawa Seishisai a Japanese nationalist thinker from Mito school, also worked on the play.

[3] This school of thought led to the Sonnō jōi movement, and eventually the Mito Rebellion against the Tokugawa shogunate during the Bakumatsu period.