Saichiro INOUE was a shita yokome who was investigating the case of the assassination of Toyo YOSHIDA that took place on May 6th of the same year.
井上佐一郎（いのうえさいちろう）は土佐藩の下横目（下級警官）で、同年4月8日の吉田東洋暗殺事件を捜査していた。