This paper, I analyze how the Improvement Discussions at Meiji era influence the Ireko style Noh Theater. For the case study, I pick up Architecture Yamazaki Seitaro who is well known for an authority of Noh. He designed Hosokawa and Umewaka Noh Theater. From these two examples, using Yamazaki's design summary and the first discovered plan of Hosokawa Noh Theater, I inspect how Improvement Discussions on Noh Theater influenced the formation of Ireko style Noh Theater.
