This paper analyzes the history of Zeami's demon plays and proposes that the Noh play Taisanmoku was written before the middle of the Ouei 10s.
During that time, Zeami endeavored to realize the demon play symbolized by the blooming on the rock. This particular phrase, “blooming on the rock,” was written in Kaden Monomane-jojo in the seventh year of Ouei, and later rewritten in Kaden Besshi Kuden. This supports the argument that Zeami plotted the theme and detailed plot of Kaden Besshi Kuden before the middle of the Ouei 10s.
We propose that the dance of the heavenly maiden did not come into being when Zeami wrote this play, as Taisanmoku was written before the dance was introduced to Yamato-Sarugaku. Consequently, the period is closer to the era of Yoshimitu.
We also analyze the Taisanfukun-Festival held during the Ouei-period and Yoshimitu's strategy to obtain the religious service which is originally that of the Emperor's, proposing a new theory: The fact that Yoshimitu organized this festival six times in the eleventh year of Ouei, which is hitherto the most number of times it had been conducted, suggests that the eleventh year of Ouei is the year when Yoshimitu completed the authority and right to carry out his strategy.
Zeami's purpose in writing Taisanmoku could have been to gain Yoshimitu'support in understsnding his purpose.