 While at Keiō University, Minakami developed a friendship with the playwright, script writer, and director of the Bungakuza Theater, Mantarō Kubota.While still a student at Keio University he began his literary career by contributing poems and short stories to "Mita Bungaku" and to the mainstream literary magazine "Subaru".He established his own literary circle, "Rei-no-kai", by gathering his aspiring writer friends at his home.