Nichijin is considered a founder of the Hokkeshū Jinmon Ryū subsect of Nichiren Buddhism

Nichiren Buddhism

Nichiren Buddhism is a branch of Mahāyāna Buddhism based on the teachings of the 13th century Japanese monk Nichiren...

, although it was announced by Nichiin

Nichiin

Nichiin was one of Nichirō's nine senior disciples . Along with his own disciple Nichijin he is considered the founder of the Hokkeshū Jinmon Ryū subsect of Nichiren Buddhism.He was born in Teradomari in Echigo. He became a Tendai priest at the age of 8 and was sent to Kyoto at 16...

. He studied under Nichiryū (日龍) at Honjo-ji (本成寺) beginning at the age of 8, then left to study under Nichijō (日静) at 17.

While studying on Mount Chokai he met a Tendai scholar, who he debated with. That scholar converted to Nichiren Buddhism in 1379 and changed his name to Nichijū

Nichijū

Nichijū was an early Nichiren Buddhist who founded the Nichijū-ha subsect, the origin of Kempon Hokke. He was converted from Tendai Buddhism by Nichijin in 1379, at the age of 67....

. He also converted a Shingon priest who changed his name to Nichiin. He disappeared in 1419; it is believed he died on pilgrimage.