was the 36th emperor of Japan, according to the traditional order of succession.
The years of his reign lasted from 645 through 654.
Before KÃ Âtoku's ascension to the Chrysanthemum Throne, his personal name (imina) was or .
He was a descendant of Emperor Bidatsu. He was a son of Chinu no à Âkimi (Prince Chinu, è æ¸ÂçÂÂ) by Kibitsuhime no à Âkimi (Princess Kibitsuhime, Ã¥ÂÂÃ¥ÂÂå§«çÂÂ). Empress Kà Âgyoku was his elder sister from the same parents. Chinu was a son of Prince Oshisaka hikohito no à Âe, whose father was the Emperor Bidatsu. He had at least three consorts including his Empress, Hashihito no Himemiko (Princess Hashihito), the daughter of Emperor Jomei and his sister Empress Kà Âgyoku. In the 3rd year of Kà Âgyoku-tennà Âs reign (çÂÂ極天çÂÂä¸Âå¹´), the empress abdicated; and the succession (senso) was received by her younger brother. Shortly thereafter, Emperor Kà Âtoku is said to have acceded to the throne (sokui).
Kà Âtoku ruled from July 12, 645 (AD), until his death in 654. In 645, he ascended to the throne two days after Prince Naka no à Âe (Emperor Tenji) assassinated Soga no Iruka in the court of Kà Âgyoku. Kà Âgyoku abdicated in favor of her son and crown prince, Naka no à Âe, but Naka no à Âe insisted Kà Âtoku should ascend to the throne instead. Kà Âtoku's contemporary title would not have been tennà Â, as most historians believe this title was not introduced until the reigns of Emperor Tenmu and Empress Jità Â. Rather, it was presumably Sumeramikoto or Amenoshita Shiroshimesu à Âkimi (治天ä¸Â大çÂÂ), meaning "the great king who rules all under heaven". Alternatively, Kà Âtoku might have been referred to as (ã¤ãÂÂãÂÂ大çÂÂ/大åÂÂ) or the "Great King of Yamato". According to the Nihonshoki, he was of gentle personality and was in favor of Buddhism.
In 645, he created a new city in the area called Naniwa, and moved the capital from Yamato Province to this new city (see Nara). The new capital had a seaport and was good for foreign trade and diplomatic activities. In 653, KÃ Âtoku sent an envoy to the court of the Tang dynasty in China, but some of the ships were lost en route.
Naka no à Âe held the rank of crown prince and was the de facto leader of the government. In 653 Naka no à Âe proposed to move the capital again to Yamato province. Kà Âtoku denied. Naka no à Âe ignored the emperor's policy and moved to the former province. Many courtiers of the court, including Empress Hashihito, followed him. Kà Âtoku was left in the palace. In the next year he died of an illness. After his death, Naka would not ascend to the throne. Instead, his mother and the sister of Kà Âtoku, the former Empress Kogyoku, ascended to the throne under another name, Empress Saimei.
He enacted the Taika Reform edicts. The system of hasshà  kyakkan (eight ministries and a hundred offices) was first established during the reign of Emperor Kà Âtoku.
The actual site of Kà Âtoku's grave is known. This emperor is traditionally venerated at a memorial Shinto shrine (misasagi) at Osaka. The Imperial Household Agency designates this location as Kà Âtoku's mausoleum. It is formally named à Âsaka-no-shinaga no misasagi.
Traditionally the monk Hà Âdà Â, was born in today India, and traveled to Japan via Tang China and the Baekje kingdom in Korea. Hà Âdà  cured an illness of the Emperor Kà Âtoku (596 â 654 AD), who then sent the monk to establish numerous Buddhist temples. According to legend Hà Âdà  founded Tenjà Â-ji in 646 (AD). The monk is worshipped in the Gion faith.
Kugyà  (å ¬å¿) is a collective term for the very few most powerful men attached to the court of the Emperor of Japan in pre-Meiji eras.
In general, this elite group included only three to four men at a time. These were hereditary courtiers whose experience and background would have brought them to the pinnacle of a life's career. During Kà Âtoko's reign, this apex of the Daijà Â-kan included:
The years of Kà Âtoku's reign are more specifically identified by more than one era name or nengà Â.
Empress: Princess Hashihito (éÂÂ人çÂÂ女, d. 665), Emperor Jomei and Empress Kogyoku's daughter
Hi: Abe no Otarashi-hime (é¿é¨å°Âè¶³åªÂ), Abe no Kurahashi-maro's daughter
Hi: Saga no Chi-no-iratsume (èÂÂæÂÂä¹³å¨Â), Soga no Kura-no-Yamada no Ishikawa-no-maro's daughter