The stairs from Zuijin-mon Gate lead to Shichimenzan (Mount Shichimen) Keishin-in Temple. It is the head temple enshrining the Shichimen Dimyojin Deity. Kuon-ji Temple manages Keishin-in Temple as a branch of Minobusan. The Chief Administrator (betto) appointed by the head priest of Kuon-ji Temple is dispatched to Keishin-in Temple every three years.
The main hall, called Mani-den Hall, consists of the Worship Hall, Offering Hall, and Inner Hall. It has a unique architectural style called Shichimen-zukuri, and was built to face east toward Mount Fuji. Keishin-in Temple also has Iketai-jingu Shrine, Gamman-sha, Sanro-den, and Shoro-do Hall buildings, most of which were rebuilt after a fire in 1776. On the left side of the Worship Hall is a room for the Chief Administrator (betto), the Temple Office, and Sanro-den Hall, which can provide overnight accommodations for 1,000 worshippers.