During this time, Tokuitsu built many temples across the southern part of Mutsu Province to Hitachi Province, including Enichi-ji Temple in Aizu in Mutsu Province, Shojo-ji Temple in the same Province, Chuzen-ji Temple (Omido) on Mt. Tsukuba in Hitachi Province (Tsukuba City), and Saiko-in Temple, and at the same time conducted propagation among the people, which reportedly led them to refer to him as 'Tokuitsu Bosatsu,' Bosatsu (Bodhisattva) meaning one who vows to save all beings before becoming a Buddha.
この間、陸奥国会津慧日寺や同国会津勝常寺、常陸国筑波山中禅寺（大御堂(つくば市)）、西光院など陸奥南部～常陸にかけて多くの寺院を建立すると共に、民衆布教を行い「徳一菩薩」と称されたという。