Ninja Kazakiri Ippei

is a Japanese light novel series written by Ryosuke Sakaki, with illustrations by Aki Shiina. The series began publication on February 10, 1997 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The time is the third year of Keicho. Momoyama culture was in full bloom in the capital. However, under the surface, the Tokugawa Ninja army showed an eerie move in search of hegemony after Hideyoshi's death. There is one ninja who should be called a child of such an era. He is called Ippei Kazekiri. Ippei, whose adoptive father is Kirigakure Saizo, who is famous as a weirdo genius ninja, has a strong Meppou, but he is a no-tenki, a strange thing, and ..., he liked an unrivaled woman. Kikyo, a "dagger-throwing girl" who sells arts at Sorimachi Shusui & Kyogawara, a "slightly waisted samurai" who suddenly acts with Ippei. An endlessly lively and endless adventure is about to begin.