Kōchi Prefecture in the context of "Shimanto River"

The Tosa Domain (土佐藩, Tosa-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan, controlling all of Tosa Province in what is now Kōchi Prefecture on the island of Shikoku. It was centered around Kōchi Castle, and was ruled throughout its history by the tozama daimyō Yamauchi clan. Many people from the domain played important roles in events of the late Edo period including Nakahama Manjirō, Sakamoto Ryōma, Yui Mitsue, Gotō Shōjirō, Itagaki Taisuke, Nakae Chōmin, and Takechi Hanpeita. Tosa Domain was renamed Kōchi Domain (高知藩, Kōchi-han) during the early Meiji period until it was dissolved in the abolition of the han system in 1871 and became Kōchi Prefecture.

Tokushima Prefecture (徳島県, Tokushima-ken; Japanese pronunciation: [to.kɯ̥ꜜ.ɕi.ma, tokɯ̥.ɕiꜜ.ma, to.kɯ̥.ɕi.maꜜ.keɴ]) is a prefecture of Japan located on the island of Shikoku. Tokushima Prefecture has a population of 682,439 (1 February 2025) and has a geographic area of 4,146 km (1,601 sq mi). Tokushima Prefecture borders Kagawa Prefecture to the north, Ehime Prefecture to the west, and Kōchi Prefecture to the southwest.

Tokushima is the capital and largest city of Tokushima Prefecture, with other major cities including Anan, Naruto, and Yoshinogawa. Tokushima Prefecture is located on the Kii Channel, connecting the Pacific Ocean and Seto Inland Sea, across from Wakayama Prefecture on the Kii Peninsula of the island of Honshu. Tokushima Prefecture is connected to Awaji Island across the Naruto Strait by the Ōnaruto Bridge as part of the Kobe-Awaji-Naruto Expressway, connecting the prefecture to the city of Kobe and the San'yō Expressway on Honshu.

Kōchi Castle (高知城, Kōchi-jō) is an Edo Period Japanese castle in the city of Kōchi, Kōchi Prefecture, Japan. It is located at Otakayama hill, at the center of Kōchi city, which in turn is located at the center of the Kōchi Plain, the most prosperous area of former Tosa Province on the island of Shikoku. From 1601 to 1871, it was the center of Tosa Domain, ruled by the tozama Yamauchi clan under the Tokugawa Shogunate. The castle site has been protected as a National Historic Site since 1959, with the area under protection expanded in 2014.

The Yamauchi clan (山内氏) were a family of rulers over what was then the Tosa Province which spanned the southern half of Shikoku island.

The province was given to the family in 1600 after Yamauchi Kazutoyo led troops under Tokugawa Ieyasu at the Battle of Sekigahara. The family stayed loyal to the Tokugawa dynasty until shortly before its overthrow in 1868. The head of the family at that time Yamauchi Toyoshige became prince of the newly formed Kōchi Prefecture under Imperial rule.

A kitchen knife is any knife that is intended to be used in food preparation, as opposed to a table knife used when eating, as part of a set of cutlery. While much of this work can be accomplished with a few general-purpose knives — notably a large chef's knife and a smaller serrated blade utility knife — there are also many specialized knives that are designed for specific tasks such as a tough cleaver, a small paring knife, and a bread knife. Kitchen knives can be made from several different materials, though the most common is a hardened steel blade with a wooden handle.

Historically, knives were made in "knife cities" that are noted for being the best at their production in that country with the pre-emininent, in Europe, being: Sheffield in Yorkshire, North of England; Thiers, Puy-de-Dôme in the Auvergne of France; Solingen in the Northern Rhineland of Germany; and Eskilstuna of Södermanland in Sweden. Each of these produced knives in a styles particular to the city, with Thiers especially being noted for the French point of Laguiole and steak knives. Whereas in Japan, there are many dispersed centres of kitchen knife production due to diversification that followed in wake of legislation restricting the production of sword-making. These are Tsubame-Sanjō in Niigata Prefecture, Seki in Gifu Prefecture, Sakai in Osaka Prefecture, Takefu-Echizen in Fukui Prefecture, and Tosa in Kōchi Prefecture amongst a number of others. Each area have their own style of knife, with Sakai in Osaka favouring the "sheep's foot" or drop point, in contrast to the square-tipped style of Edo, modern-day Tokyo.

Ehime Prefecture (愛媛県, Ehime-ken; Japanese pronunciation: [eꜜ.çi.me, e.çi.meꜜ.keɴ]) is a prefecture of Japan located on the island of Shikoku. Ehime Prefecture has a population of 1,334,841 and a geographic area of 5,676 km (2,191 sq mi). Ehime Prefecture borders Kagawa Prefecture to the northeast, Tokushima Prefecture to the east, and Kōchi Prefecture to the southeast. Ehime Prefecture Prefecture also borders Hiroshima Prefecture for 74 metres (243 ft) on Hyōtanjima.

Matsuyama is the capital and largest city of Ehime Prefecture and the largest city on Shikoku, with other major cities including Imabari, Niihama, and Saijō.

Nankoku (南国市, Nankoku-shi) is a city located in Kōchi Prefecture, Japan. As of 31 July 2022, the city had an estimated population of 46‚459 in 22499 households and a population density of 370 persons per km. The total area of the city is 125.30 square kilometres (48.38 sq mi).

Kōchi (高知市, Kōchi-shi; Japanese pronunciation: [koꜜː.tɕi, koː.tɕi̥ꜜ.ɕi], locally [koː.tɕi]) is the capital city of Kōchi Prefecture located on the island of Shikoku in Japan. With over 40% of the prefectural population, Kōchi is the main commercial and industrial centre and the "primate city" of the prefecture. As of 1 April 2023, the city had an estimated population of 311,224 in 163,479 households, and a population density of 1,000 persons per km. The total area of the city is 309.00 square kilometres (119.31 sq mi).