Nagasone Kotetsu

However, as Ishida was defeated by Tokugawa Ieyasu at the Battle of Sekigahara, the Nagasone family and some other craftsmen from Sawayama went to Echizen Province, where they took refuge in Fukui City.

However, the fact remains that Kotetsu has been often faked over the past 350+ years, and so both the signatures as well as the style and quality of the blade should be judged closely to determine accuracy.

[citation needed] Perhaps one of the most famed Kotetsu blades was a fake: that of Kondō Isami, the commander of the late Edo-era patrol force called Shinsengumi.

[6] "Kotetsu" is used as a name for swords in various anime, manga, and video game series, such as Vagabond, Rurouni Kenshin, Kimetsu no Yaiba, One Piece and Black Cat.

[citation needed] The Kōtetsu (formerly the Confederate warship CSS Stonewall) was a Japanese navy ironclad in the Boshin War.