Sakamoto Ryōma in the context of "Modernization"

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.

Fushimi (伏見区, Fushimi-ku) is one of the eleven wards in the city of Kyoto, in Kyoto Prefecture, Japan. Famous places in Fushimi include the Fushimi Inari Shrine, with thousands of torii lining the paths up and down a mountain; Fushimi Castle, originally built by Toyotomi Hideyoshi, with its rebuilt towers and gold-lined tea-room; and the Teradaya, an inn at which Sakamoto Ryōma was attacked and injured about a year before his assassination. Also of note is the Gokōgu shrine, which houses a stone used in the construction of Fushimi Castle. The water in the shrine is particularly famous and it is recorded as one of Japan's 100 best clear water spots.

Although written with different characters now, the name Fushimi (which used to be its own "town") originally comes from fusu + mizu, meaning "hidden water" or "underground water". In other words, the location was known for good spring water. The water of Fushimi has particularly soft characteristics, making it an essential component to the particular type of sake brewed in Fushimi. This also explains why the area developed as a sake-brewing center in Kyoto. Today, Fushimi is the second greatest area of Japan in terms of sake production, and is where the sake company Gekkeikan was founded.

Nakaoka Shintarō (中岡 慎太郎; May 6, 1838 – December 12, 1867) was a samurai in Bakumatsu period Japan, and a close associate of Sakamoto Ryōma in the movement to overthrow the Tokugawa shogunate.