It is said that this style originated in Kaizan-do Hall adopted in Buddist temples, where the Shi-do hall (a hall dedicated to the souls of ancestors), is connected to the Rai-do hall (a worship hall) with the Ainoma (connection room).
その起源は仏寺の開山堂（相の間で祠堂と礼堂を結ぶ）が起源とされる。