According to "Heike Monogatari" (The Tale of the Heike), after being deported to the Kikaiga-shima Island, Shunkan and the two others spent days longing for home, and Naritsune and Yasuyori came up with an idea to make one thousand stupas and release them in the sea, but Shunkan did not participate in this act.
『平家物語』によると、鬼界ヶ島に流された後の俊寛ら三人は望郷の日々を過ごし、成経と康頼は千本の卒塔婆を作り海に流すことを発心するが、俊寛はこれに加わらなかった。