Azuchi-Momoyama period in the context of "Minister of the Right"

Toyotomi Hideyoshi (豊臣 秀吉; Japanese pronunciation: [to.jo.to.mʲi (|) çi.de(ꜜ).jo.ɕi], 27 March 1537 – 18 September 1598), otherwise known as Kinoshita Tōkichirō (木下 藤吉郎) and Hashiba Hideyoshi (羽柴 秀吉), was a Japanese samurai and daimyō (feudal lord) of the late Sengoku and Azuchi-Momoyama periods and regarded as the second "Great Unifier" of Japan. Although he came from a peasant background, his immense power earned him the rank and title of Kampaku (関白, Imperial Regent) and Daijō-daijin (太政大臣, Chancellor of the Realm), the highest official position and title in the nobility class. He was the first person in history to become a Kampaku who was not born a noble. He then passed the position and title of Kampaku to his nephew, Toyotomi Hidetsugu. He remained in power as Taikō (太閤), the title of retired Kampaku, until his death. It is believed, but not certain, that the reason he refused or could not obtain the title of shogun (征夷大将軍), the leader of the warrior class, was because he was of peasant origin.

Hideyoshi rose from a peasant background as a retainer of the prominent lord Oda Nobunaga to become one of the most powerful men in Japanese history. He distinguished himself in many of Nobunaga's campaigns. After Nobunaga's death in the Honnō-ji Incident in 1582, Hideyoshi defeated his assassin Akechi Mitsuhide at the Battle of Yamazaki and became Nobunaga's successor. He then continued the campaign to unite Japan that led to the closing of the Sengoku period. Hideyoshi became the de facto leader of Japan and acquired the prestigious positions of daijō-daijin and kampaku by the mid-1580s. He conquered Shikoku in 1585 and Kyūshū in 1587, and completed the unification by winning the Siege of Odawara in 1590 and crushing the Kunohe rebellion in 1591. With the unification of Japan complete, Hideyoshi launched the Japanese invasions of Korea in 1592 to initial success, but eventual military stalemate damaged his prestige before his death in 1598. Hideyoshi's young son and successor Toyotomi Hideyori was displaced by Tokugawa Ieyasu at the Battle of Sekigahara in 1600 which would lead to the founding of the Tokugawa Shogunate.

Oda Nobunaga (織田 信長; [o.da (|) no.bɯ(ꜜ).na.ɡa, -na.ŋa] ; 23 June 1534 – 21 June 1582) was a Japanese daimyō and one of the leading figures of the Sengoku and Azuchi-Momoyama periods. He was the Tenka-bito (天下人; lit. 'person under heaven') and regarded as the first "Great Unifier" of Japan. He is sometimes referred as the "Demon Daimyō" and "Demon King of the Sixth Heaven".

Nobunaga was an influential figure in Japanese history and is regarded as one of the three great unifiers of Japan, along with his retainers, Toyotomi Hideyoshi and Tokugawa Ieyasu. Nobunaga paved the way for the successful reigns of Hideyoshi and Ieyasu by consolidating power, as head of the very powerful Oda clan, through a series of wars against other daimyō beginning in the 1560s. The period when Nobunaga and Hideyoshi were in power is called the Azuchi–Momoyama period. The name "Azuchi–Momoyama" comes from the fact that Nobunaga's castle, Azuchi Castle, was located in Azuchi, Shiga; while Fushimi Castle, where Hideyoshi lived after his retirement, was located in Momoyama.

Minister of the Right (右大臣, Udaijin) was a government position in Japan during the Asuka to Meiji era. The position was consolidated in the Taihō Code of 701. The Asuka Kiyomihara Code of 689 marks the initial appearance of the Udaijin in the context of a central administrative body called the Daijō-kan (Council of State). This early Daijō-kan was composed of the three ministers—the Daijō-daijin (Chancellor), the Sadaijin (Minister of the Left) and the Udaijin. The Udaijin was the Junior Minister of State, overseeing all branches of the Daijō-kan. He would be the deputy of the Sadaijin.

From the Kamakura period (1185–1333), when the warrior class came to power in Japan, this imperial court position became an honorary position with no real authority. Oda Nobunaga, who was a powerful daimyo in the Azuchi-Momoyama period, was a daimyo who held this imperial court position. This was the first time since Minamoto no Sanetomo in 1218 that a member of the warrior class had been appointed Udaijin. Previously, the only warrior class members appointed to higher positions than Udaijin were Taira no Kiyomori and Ashikaga Yoshimitsu as Daijō-daijin, and Ashikaga Yoshinori and Ashikaga Yoshimasa as Sadaijin. The warrior class was able to use the high imperial court positions of Daijō-daijin, Sadaijin, and Udaijin, which had originally belonged to the nobility, as a means of establishing their own authority.

Himeji Castle (姫路城, Himeji-jō; [çimeʑiꜜʑoː] ) is a hilltop Japanese castle complex situated in Himeji, a city in Hyōgo Prefecture, Japan. The castle is regarded as the finest surviving example of prototypical Japanese castle architecture, comprising a network of 83 rooms with advanced defensive systems from the feudal period. The castle is frequently known as Hakuro-jō or Shirasagi-jō ("White Egret Castle" or "White Heron Castle") because of its brilliant white exterior and supposed resemblance to a bird taking flight.

As with almost all Japanese castles from the Azuchi-Momoyama period onward, the tenshu (天守, main keep), the most prominent structure, was used as a storehouse in times of peace and as a fortified tower in times of war, and the daimyo (大名, feudal lord)'s government offices and residences were located in a group of single-story buildings near the tenshu and the surrounding yagura (櫓, turrets).

Daikaku-ji (大覚寺, Daikaku-ji) is a Shingon Buddhist temple in Ukyō-ku, a western ward in the city of Kyoto, Japan. The site was originally a residence of Emperor Saga (785–842 CE), and later various emperors conducted their cloistered rule from here. The Saga Go-ryū school of ikebana has its headquarters in the temple. The artificial lake of the temple, Ōsawa Pond, is one of the oldest Japanese garden ponds to survive from the Heian period.