The following four works are examined to see how the Kusazoshi of the unusual dog marriage and the Kusazoshi of the popular rat marriage stories generate ideas. They are ②“Sensyuraku　Nezumino Yomeiri”, ③“Chinno Yomeiri”, ⑧“Kotobuki Nezumino Yomeiri” and ⑬“Iroage Nezumino Yomeiri”. For a Gesaku to be enjoyed for a long time, it must be written by idea that keeps up with the times. However, in ③, 1.the obstruction of the marriage procession, 2. the mother-in-law who loves her daughter-in-law, and 3.the movement from the human world to the other world were unique for a “marriage story”. For example, in the case of a marriage talk, an arranged marriage, or a marriage preparation scene, the picture depicts the marriage customs, but the text is written in a way that has nothing to do with the marriage customs. In other words, a unique topic set up to move the world from the human world to the other world develops with illustrations depicting marriage customs. Kiyonaga, who painted ③ of the above Tsusho’s works, also painted ②. Therefore, I considered the interrelationship between ② and ⑧, which is also a mouse marriage story.As a result, I presumed the process by which ⑧ was published under the title of ⑬ as the name of Ikku. The reason why the old work was able to be marketed as a ne...