In the former research works, the rishoto-pagoda in Sanuki was supposed to be the gojunoto-pagoda of Zentsuji-temple reconstructed by Yuban. But if s not possible because his reconstruction of it was after the completion celemony of the rishoto-pagoda. The real rishoto-pagoda is supposed to be the stone pagoda of Zentsuji-temple called "Ashikagatakauji-rishoto", because it was believed to be the real one in the 18th century, and some documents and pictorical sources suggest that the stone pagoda existed at the same point in the early 14th century.