Ryozo SHUKUIN (circa 1821 - January 30, 1868) was a common member of the Miburoshigumi (Mibu masterless warriors group, which was the forerunner of the Shinsengumi) and the Shinsengumi (literally, the newly selected corps, referring to a special police force for the Tokugawa regime).
宿院良蔵（しゅくいんりょうぞう、文政4年（1821年）頃？-慶応4年1月6日(旧暦)（1868年1月30日））は、壬生浪士組及び、新選組平隊士。