As Shinshichi has much concern with the title of his works, 'kosode (a kimono with short sleeves worn as under clothing by the upper classes)' from "Kosode Soga Azami no Ironui" refers to the scene where Seishin receives a kosode when being expelled; 'azami' expresses the name 'Seikichi ONIAZAMI'; and 'iro' implies iromachi (red-light district) where Izayoi works.
題名に凝る新七らしく、『小袖曾我薊色縫』の「小袖」は追放される清心に小袖を渡す場面を、「薊」は「鬼薊清吉」の薊の字を、「色」は十六夜の働く「色街」の色の字を、それぞれ利かせている。