In 1327 Zhengcheng, who had been appointed head priest of Kenchōji 建長寺, put Ingen in charge of the Kenchōji sutra repository 經藏. In 1337 Musō Soseki assigned Ingen to Erinji 惠林寺 in Kai 甲斐 province (present-day Yamanashi prefecture). Kosen then he moved to Jōchiji 淨智寺 in Kamakura. In 1338 he founded Tōjiji 等持寺 in Yamashiro 山城 province (present-day Kyoto), and later became chief fundraiser for Ryakuōji 曆應寺 (Tenryūji 天龍寺). He resided at Shinnyoji (1354) and Manjuji in Kyoto (1350), and Jōchiji in Sagami 相模 (present-day Kanagawa prefecture), and founded Fuōji 普應寺 in Ōu 奧羽 province (present-day Fukushima prefecture). In 1358, Ingen became the founder of Chōjuji 長壽寺 in Kamakura. The following year he was appointed head priest at Engakuji and then at Kenchōji, where he built the Kōtokuan 廣德庵 hermitage. He died in 1374 at the age of 80. He is memorialized at the Kenchōji Kōtokuan and the Chōjuji Donpōan 曇芳庵. His posthumous title is Shōshū Kōchi Zenji 正宗廣智禪師.