Many of the esoteric Buddhism temples in Kunisaki peninsula, which were called Rokugo-manzan (Mountain of Six Sanctuaries), have engi (writing about the history) which say these temples have been founded by Ninmon in 718.
六郷満山と呼ばれる国東半島の密教寺院の多くは、養老2年（718年）に仁聞が開基したとの縁起を伝えている。