The map currently in Ryūkoku University (hereafter, Ryūkoku copy) has gathered scholarly attention since the early 20th century. It is 158 cm by 163 cm, painted on silk. It is presumed that the Ryūkoku copy was created in Korea but it is not clear when the copy was brought to Japan. One claims that it was purchased by Ōtani Kōzui and others assume that it was obtained during the invasion of Korea (1592–1598) and given to the West Honganji temple by Toyotomi Hideyoshi. It contains some place names of Korea that are newer than 1402, suggesting that the Ryūkoku copy was partially modified from the 1402 original around the 1470s and 1480s.