Shunko I was a student of Katsukawa Shunsho, and is generally credited with designing the first large-head actor portraits (okubi-e). From about 1771, he began to design yakusha-e actor prints, which he signed with a small jar-shaped seal that appeared next to a larger one by his master; from this he earned the nickname kotsubo (small jar). Other subjects Shunko depicted include sumo wrestlers.