On his way back to Oami, upon request of his disciple, Jozenbo-shinkai, Shinnyo stayed at Taishi-do Hall (currently, Horyu-ji Temple) in Kamikanesawa, Hitachi Province (now, Daigo-machi, Ibaraki Prefecture) for propagation.
その帰路の際、門弟乗善房信海より請われ、常陸国の上金沢（現、茨城県大子町）の太子堂〈現、法龍寺）に入り布教活動する。