He ardently studied the techniques of various painting schools including Sesshu, the Kano School, Yamato-e painting (a traditional Japanese style painting of the late Heian and Kamakura periods dealing with Japanese themes), and the Maruyama Shijo School and the Western oil painting and incorporated them into his own technique.
さらに雪舟、狩野派・大和絵・円山四条派などの諸派や洋画の画法を熱心に研究し、様々な技法を取り入れた。