Conclusion

・First, “E innga kyou” was created in the Nara period.
・Later, “picture scrolls” which repeat picture and story alternately were created.
・Finally, “Nara Ehon” was created in the end of the Muromachi period.
・“Kusa zousi” spread among Japanese people thanks to the progress of printing techniques.
=Ehon became familiar to many people in Japan.

Ehon is still popular among people now.

Ehon is the book which is both historical, profound and has evolved over a long period of Japanese history.