Hana no Keiji (花の慶次, lit. The Flowery Keiji) is a Japanese period manga series, based on the novel Ichi-Mu-An Fūryūki by Keiichiro Ryu and illustrated by Tetsuo Hara. It was serialized in Shueisha's Weekly Shōnen Jump from March 1990 to August 1993. The story serves as a fictionalized account of the life of Keiji Maeda. Hana no Keiji is one of best-selling Weekly Shōnen Jump manga series of all time, with over 17 million copies in circulation. An English adaptation was published in Raijin Comics under the shortened title Keiji.