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Kenkaku Shōbai (剣客商売, Kenkaku Shōbai) is a series of popular historical novels written by Shōtarō Ikenami and one of the representative novels of Ikenami along with Onihei Hankachō and Shikakenin Fujieda Baian. The stories were originally serialized in the monthly magazine Shōsetsu Shinchō between 1972 and 1989. Sixteen full-length novels were published from Shinchosha between 1973 and 1989. Kenkaku Shōbai was also adapted into TV programs and manga series.
Characters
Kohei Akiyama (秋山 小兵衛, Akiyama Kohei): Akiyama Kohei : The main character Akiyama Kohei is a master of Mugai ryu but he is spending retired life. Though Kohei is old, he is still a skilled swordsman.
Daijirō Akiyama (秋山 大治郎, Akiyama Daijirō) : Kohei's son who manages school of swordplay.
Oharu (おはる, Oharu): Kohei's wife. She is 40 years younger than Kohei.