It is believed that Tamuramaro rebuilt the Hondo main hall on a large scale in cooperation with Enchin (former Kenshin) in 798, carving the statues of Jizo Bosatsu and Bishamonten regarded as Kyoji (attendant figures) of the statue of Kannon, and then enshrined them all together.
延暦17年（798年）、田村麻呂は延鎮（もとの賢心）と協力して本堂を大規模に改築し、観音像の脇侍として地蔵菩薩と毘沙門天の像を造り、ともに祀った、という。