Naritasan Shinsho-ji Temple in Narita City, Chiba Prefecture, is a temple which, according to legend, was built over a place where a prayer ritual to vitalize the anti-Masakado forces was conducted by Buddhist Priest Kancho Sojo, who took the sea route (land route took too long) to go down to the Kanto area on a secret order from Emperor Suzaku, who feared the disorder in the eastern provinces.
千葉県成田市の成田山新勝寺は、東国の混乱をおそれた朱雀天皇の密勅により海路（陸路は日数を要す）下向した寛朝僧正が、対将門勢の士気を鼓舞するために祈祷を行ったとされる場所に、言い伝えによって建てられた寺院である。