One legend says that Emperor Seiwa, who stole out of the palace and concealed himself in Kurokawa owing to some circumstances from 859 to 877, loved the local people and nature there and taught them the private Noh of the court called Ouchi-kakari.
貞観年間（859～877年）にある事情から宮廷を抜け出し、黒川の地に身を隠した清和天皇がこの地の人情と自然を愛し、大内掛りという宮廷の秘事能を里人に教えたのが由来。