 But by this time Kiyonobu, and his successor Torii Kiyonobu II, were also producing paintings and prints of courtesans, erotic scenes, and sumo.Even as the Torii school expanded, and began to produce works in the increasingly popular form of paintings and prints, the core purpose of the clan remained the production of billboards, posters, and other theatrical works.As such, Kiyonobu, and the heads of the clan after him, worked primarily on these types of works, leaving relatively few paintings and prints.