Chidori is a little ninja girl living in Japan's Warring States Period. One day, Oda Nobunaga rescued her from drowning in a river. Since that day, Chidori knew she wanted to serve Nobunaga. Five years later, she and Sukezou (who likes her) head out from their ninja village, determined to serve Oda Nobunaga!

Nobunaga no Shinobi (信長の忍び) is a Japanese four-panel manga series by Naoki Shigeno, serialized in Hakusensha's seinen manga magazine Young Animal since 2008. It has been collected in nine tankōbon volumes. A spin-off manga titled Nobunaga no Shinobi: Owari Tōitsu-ki began serialization in Hakusensha's seinen manga magazine Young Animal Arashi in 2012, and has been collected in a single tankōbon volume. Other spin-off manga series include Gunshi Kuroda Kanbee Den, Masamune sama to Kagetsuna kun and Sanada Tamashii.

An anime television series adaptation by TMS Entertainment began airing in October 2016 and is being simulcast by Crunchyroll under the title Ninja Girl & Samurai Master. An "Episode 0" was screened at the AnimeJapan 2016 event between March 25 and 27.