Empress Kà Âken (born Abe, known as Empress Shà Âtoku during her second reign; 718âÂÂ770) was the 46th and 48th monarch of Japan according to the traditional order of succession. Seeking to protect the bloodline of Prince Kusakabe, her father, Emperor Shà Âmu, proclaimed her the first crown princess in Japanese history in 738, and she succeeded her father as empress regnant in 749 after he retired to become a Buddhist monk. With the backing of her mother, Empress Kà Âmyà Â, and cousin Fujiwara no Nakamaro, she was able to outmaneuver a largely hostile (Council of State). Her father died in 756, having named a cousin unrelated to the Fujiwara clan as Kà Âken's heir; this outraged her maternal Fujiwara relatives and their supporters, and Kà Âken replaced him with Prince à Âi, a close ally of her mother and Nakamaro. In 757, she headed off a conspiracy to overthrow her by Tachibana no Naramaro, and resigned the following year to serve as empress emerita (), while à Âi reigned as Emperor Junnin.
Nakamaro slowly consolidated his political power with the backing of Empress Kà Âmyà Â. After an illness, Kà Âken became close to a healer-monk named Dà Âkyà Â, who became one of her strongest allies, as well as potentially an intimate partner. After this, she became a bhikkhunë (Buddhist nun) and shaved her head. After her mother's death in 760, Kà Âken began to oppose Nakamaro. She proclaimed superiority over Emperor Junnin in state matters in 762, and allied with anti-Nakamaro leaders, including her childhood tutor Kibi no Makibi. In 764, political conflict grew violent after she attempted to take control of the royal seals; Nakamaro fought a brief rebellion against her, naming Prince Shioyaki as emperor, but both were captured and executed, and Kà Âken returned to the throne as Empress Shà Âtoku.
Shà Âtoku's second reign was marked by the promotion of Buddhist ideals and religious institutions, as well as the advancement of Dà Âkyà  (who was promoted to the rank of , 'Prince of the Law' or 'Buddhist King') to oversee religious matters. She oversaw land reform which placed limits on land ownership for all except Buddhist templesâÂÂalienating aristocrats and courtisans, and ordered the foundation of a new capital. As part of her religious reforms, she placed monastic officials on the Council of State for the first time, and ordered the construction of one million miniature pagodas housing printed prayers; these were distributed to major temples around Nara. In 769, she was the subject of an incident where an oracle of the Usa Shrine stated that the deity Hachiman sought for Dà Âkyà  to become emperor. This was disputed by an emissary named Wake no Kiyomaro, and Dà Âkyà  lost his political standing following her death several months later.
Princess Abe was born in 718 to Obito, the Crown Prince of Japan, and his consort Fujiwara Asukabehime. Obito, the son of Emperor Monmu and grandson of the powerful statesman Fujiwara no Fuhito, had been considered as a candidate for emperor in his youth after his father's death in 707. Instead, Monmu's mother Gemmei was selected; this was somewhat supported by Obito's proponents, as Gemmei wished for Obito to be her successor. Obito was declared crown prince in 713, but did not succeed his grandmother when she resigned in 715. Instead, the throne first passed to Obito's aunt Genshà Â, who passed the throne to Obito in 724. Obito then reigned as Emperor Shà Âmu.
Emperor Shà Âmu and Asukabehime had a son, Motoi, in 727. To the frustration of some court members, the emperor designated Motoi the crown prince soon after his birth, following the succession law promulgated in the Taihà  Code. However, Motoi died before the age of two, leaving the future succession unclear. Shà Âmu had another son, Prince Asaka (born to a mother from the Agata-Inukai family) whose potential succession greatly worried the Fujiwara clan and its supporters. Following the alleged coup attempt and resulting suicide of the potential throne claimant Prince Nagaya in 729, Shà Âmu declared Asukabehime queen consort. Taking the title Empress Kà Âmyà Â, this appointment qualified her to become empress regent upon Shà Âmu's death, and privileged her descendants (including Abe) for future succession.
The 735âÂÂ737 Japanese smallpox epidemic devastated western Yamato, killing all four of Empress Kà Âmyà Â's brothers. Although the court was reorganized in the aftermath of the epidemic (with significantly less Fujiwara influence), Shà Âmu declared his twenty-one-year-old daughter Abe his heir in 738. A woman had never been declared as heir to the throne; prior empresses, such as Genmei and Genshà Â, had only reigned temporarily during the minority of male heirs. Non-Fujiwara members of the court opposed Abe's heirship in favor of Asaka, but Shà Âmu resisted, seeing Asaka's Agata no Inukai mother's clan as less useful allies than those of Abe's Fujiwara mother. Asaka died in 744 at age 16, leaving Abe as the only plausible heir.
Writing in a later edict, Abe recounted how her "mother revealed that the royal stem line [of Prince Kusakabe] would end. To prevent that, it was necessary that I succeed, even though a woman."
Abe was educated by the scholar Kibi no Makibi, who had studied in China and taught her to read the Chinese classics such as the Book of Rites and the Book of Han. Likely at Kibi's suggestion, she performed the dance for Emperor Shà Âmu and Genshà  in a filial ceremony in the early spring of 743. Abe never married; this may have been to preserve the bloodline of Prince Kusakabe, as any of her children would be considered part of her consort's family and not a direct descendant of Kusakabe.
Genshà  died in 748, leaving the office of vacant. Shà Âmu, purportedly in ill health and unable to fulfill his duties as emperor, issued an edict in 749, declaring, "Reflecting upon the fact that only sons carry on the father's name, should daughters go unrewarded? It is fitting that both serve together." On the second day of the seventh month of 749, Shà Âmu resigned to become a Buddhist monk, and Abe took the throne as Empress Kà Âken. Shà Âmu's resignation speech appealed to concepts of sacred kingship and patrilineal succession, followed since the reign of Emperor Tenji, as well as to female deities and past female rulers.
At the beginning of her reign, Empress KÃ Âken faced considerable political opposition from the . Only three members of the fifteen-member council were members of the Fujiwara clan. She chose a four-character era name, , upon her ascension to the throne, possibly modelled after the unique four-character era names introduced by the influential Chinese empress regnant Wu Zetian.
As her lack of an heir proved a consistent source of political tension with the Grand Council of State, Kà Âken sought to rule by decree and bypass the council. Her mother, Empress Kà Âmyà Â, transformed the ('Queen-consort's Household Agency') into a larger agency dubbed the . Taking on a dual role as both a secretariat and a managing agency for the royal household, the agency expanded to include around a thousand officials and performed duties similar to those of the Council of State. Kà Âmyà  appointed her nephew, Fujiwara no Nakamaro (the grandson of Fujiwara no Fuhito and a member of the Great Council of State), to head the agency. He used it to transmit and enforce Kà Âken's edicts. This agency granted tremendous power to both Kà Âmyà  and Nakamaro, the latter of whom steadily gained influence over the course of Kà Âken's reign, becoming the dominant political figure in Kà Âken's court and representing a resurgence of Fujiwara power. Nakamaro suppressed the influence of Kà Âken's opponents, including his main political rival, Tachibana no MoroeâÂÂ<nowiki/>the nominal head of government, formerly supported by Empress Genshà Â.
Kà Âken and Nakamaro also used the Tà Âdai-ji Construction Agency (), established by Shà Âmu to oversee the creation of the Nara Great Buddha, as a means to support their rule. The Great Buddha was completed in 752 and inaugurated in a grand ceremony in the fourth month; the monk Bodhisena painted the statue's eyes before the empress, her parents, and a great number of monks. They installed a plaque declaring the temple the "Realm-protecting temple of the golden light and the four heavenly kings", the chief temple of the emerging state temple system. That year, monastic governors were dispatched to each province to supplement the secular Ritsuryà  and manage the temple in each.
Emperor Shà Âmu died in the fifth month of 756, and his will assigned a cousin, Prince Funado (one of Emperor Tenmu's grandsons), to become Kà Âken's heir. Funado was not related to the Fujiwara, outraging their supporters, while the declaration of an heir by someone other than the sovereign themselves was seen as highly unusual. Several days later, Fujiwara officials retaliated by arresting two prominent opponent officials accused of disrespecting the empress. Kà Âken disavowed Funado as heir in an edict issued in the fourth month of 757, accusing him of failing to observe the mourning period for Shà Âmu. This edict also ordered copies of the Confucian Classic of Filial Piety to be distributed to local chieftains, likely echoing Emperor Xuanzong of Tang, who, fourteen years earlier, had ordered his commentary on the classic to be distributed. Later that year, Kà Âken appointed Nakamaro's son-in-law, Prince à Âi, another of Tenmu's grandsons and a close ally of both Nakamaro and Kà Âmyà Â, as crown prince. He would eventually reign as Emperor Junnin.
According to the (one of the Rikkokushi "Six National Histories"), Tachibana no Naramaro, the son of Moroe, attempted to organize a coup d'état against Kà Âken, Kà Âmyà Â, and Nakamaro in the seventh month of 757, heading a conspiracy involving over four hundred officials and four princes. They allegedly sought to kill Nakamaro and to overthrow the empress, installing one of their own as emperor. Upon learning of Naramaro's plans, Kà Âken and Kà Âmyà  ordered royal guard units to crack down on the plotters. The punishment inflicted on the plotters varied: some of them were executed, including Funado (whose name was officially changed to Matohi, 'foolish', before his death). Some princes were reduced to the status of commoners before their executions. Some plotters were exiled or imprisoned until later amnesties released them, while others were pardoned immediately. The fate of Naramaro himself is unknown, but his family avoided the extermination prescribed for the families of those convicted of high treason.
In the eighth month of the same year, a commoner from Suruga Province is said to have presented the royal court with a cocoon on which sixteen characters had been woven by a silkworm. This miraculous sign prompted the issuance of an edict five days later, proclaiming the beginning of a new era, . Later in 757, the government promulgated the Yà Ârà  Code, a legal code first begun by Fujiwara no Fuhito prior to 720. The following year, Nakamaro founded frontier outposts in the remote northern provinces of Mutsu and Dewa and ordered the construction of a fleet of 500 ships for a planned invasion of the Korean kingdom of Silla.
Later in 758, Kà Âken took control of the Imperial Guards from Nakamaro, but was pressured to resign in order to pass the throne to à Âi, who took the throne as Emperor Junnin. Kà Âken, now , also became known by the name Kà Âya.
Unusually for a new emperor, Junnin's accession to the throne was not accompanied by a new era name. At the outset of his reign, he presided over the imperial court alongside Kà Âken and Kà Âmyà Â. Nakamaro's power grew under Junnin's reign; he became the leader of the Council of State, seeing an appointment both as the Minister of the Right and as the , 'Grand Protector'. Junnin was largely under Kà Âmyà  and Nakamaro's political influence; soon after taking office, Junnin granted Nakamaro land and a new name, Emi no Oshikatsu.
In mid-760, the death of Kà Âmyà ÂâÂÂNakamaro's most influential supporterâÂÂthreatened the balance of political power. After the death of her mother, Kà Âken began to assert herself politically against Nakamaro. Around 761, she fell ill and was cared for at a temporary palace near Lake Biwa by a Buddhist monk and healer named Dà Âkyà Â. He was among the most educated group of the Nara monks, well-versed in Sanskrit, meditation, and esoteric sutras. Dà Âkyà Â's religious practices appeared to cure her illnesses, and she returned to Nara in the fifth month of 762, where she took up residence at a Buddhist temple. She became initiated as a bhikkhunë (Buddhist nun), shaved her head, and began to wear robes. Kà Âken and Dà Âkyà  entered an intimate relationship, but to what extent is unknown; the (an early ninth-century collection of stories) states that they "shared the same pillow", while the merely states that he gained her favor or affection.
KÃ Âken expanded her political power after her return to Nara, despite her monastic initiation. In the sixth month of 762, she issued an edict reproaching Junnin as disloyal and failing to uphold filial piety. She transferred much of the emperor's power to herself, stating:
Although she was emulating the authority previously held by her mother Kà Âmyà Â, the edict granted her powers unprecedented for a . She may have been inspired by Ruizong of Tang, who had passed the throne to his heir Xuanzong, while reserving power over the most important matters for himself. This greatly threatened Nakamaro, who consolidated his power; by the end of the year, three of his four sons had been appointed to the Council of State. Kà Âken held power over the royal palace, while Nakamaro held power over the Council of State and its ministries, resulting in significant political upheaval.
Political figures opposed to Nakamaro began to gravitate towards Kà Âken and make their own appointments, including Kà Âken's childhood tutor Kibi no Makibi, who was brought out of exile to manage construction at Tà Âdai-ji. Two new guard units were created to protect the palace. In 763, Kà Âken removed the (the third rank in the monastic hierarchy) Jikun, a monastic ally of Nakamaro, from the ('Prelates Office'). She replaced him with Dà Âkyà Â, promoting him past several inferior ranks. To bypass Nakamaro's control of the Council of State, she created her own secretariat dubbed the .
On New Years, 764, Emperor Junnin appointed two of Nakamaro's sons to be the governors of Echizen and Mino, wealthy neighboring provinces to his powerbase of à Âmi. Nakamaro appointed himself the commander of military units near the capital, dispatched soldiers to regions under his control, and increased the size of provincial militias. Aware that Nakamaro was planning a coup d'état, Kà Âken dispatched an emissary to take control of state seals (used for promulgating state documents) and station bells from Nakamaro's palace. The emissary was killed, and Nakamaro and his forces were forced to flee Nara in the ensuing violence, taking with him the seals and bells.
Nakamaro fled to à Âmi province. After Junnin refused to join the rebellion, Nakamaro declared the prince Shioyaki (the older brother of Funado) emperor under the name Kinkà Â. In à Âmi, he was opposed by Kibi no Makibi, who organized provincial forces against the rebellion and seized control of crucial ports around Lake Biwa. Kibi also created a cavalry force composed of palace guardsmen and established a special guard unit to protect Kà Âken. Nakamaro faced serious opposition from other members of his clan outside of his own Southern House, and especially from the descendants of Fujiwara no Umakai. State agents refused to honor Nakamaro and Shioyaki's edicts, and both were surrounded and killed by imperial forces in Echizen.
Kà Âken consolidated her political power in the aftermath of the rebellion. Although Junnin had refused to join the rebellion, he was accused of complicity, and he was captured and deposed by imperial troops about a month after Nakamaro's death. Junnin was exiled to the island of Awaji, while Kà Âken reascended to the throne under a new name, Empress Shà Âtoku.
After reassuming the throne, Shà Âtoku issued an edict proclaiming herself a bodhisattva and stating that her father, Emperor Shà Âmu, had given her the authority to depose her successors and ensure the obedience of the princes and ministers. She recalled Nakamaro's brother Fujiwara no Toyonari (who had been exiled for opposing him) back to Nara, reappointing him as Minister of the Right and leader of the Council of State. She promoted Dà Âkyà  to the third court rank and gave him a seat on the Council of State, granting him the title of ('Healer-monk and Grand Minister', a version of the rarely-held highest bureaucratic rank ), stating that an ordained ruler should be served by an ordained minister. She also expanded the size of the council, seating supporters such as Kibi no Makibi, members of different Fujiwara branches, members of rival houses, provincial leaders, and several imperial princes. The appointment of rival aristocrats was intended to balance the aristocrats against one another, but resulted in an inefficient bureaucracy and unrest on the council. However, her appointment policies did result in significantly more provincial representation within the capital, allowing for greater centralization.
Among Shà Âtoku's first acts upon reassuming the throne was to reverse Nakamaro's name changes to political posts, changing them back to Japanese from their Chinese equivalents. She expanded the imperial guard, which she placed under the command of Fujiwara no Kurajimaro, who had become her chief military commander. She organized a number of reforms favoring Buddhist temples; she restricted the amount of land aristocrats and non-Buddhist institutions could privately own, and established separate lines of command for secular and Buddhist affairs. These were organized under distinct and parallel hierarchies of ministers and advisors. She also instituted policies aimed at promoting economic stability; she granted amnesties from tribute for provinces experiencing poor harvests and famine conditions, confiscated and distributed rice paddies from aristocrats to resolve shortages of public farmland, and established systems for farmers to raise complaints against local governors. These reforms angered both courtiers and the provincial nobility, as land rents had become a major source of income for much of the aristocracy.
Shà Âtoku never appointed a crown prince during her second reign, publishing an edict in late 764 stating that she would take some time to select an heir, and would not follow the will of her courtiers in this matter.
The political influence of the Fujiwara steadily grew during Shà Âtoku's second reign; by 769, they held six out of the seventeen seats on the Council of State, alongside the Ministry of the Treasury and the Ministry of Popular Affairs. They were countered by a group of Shà Âtoku's closest allies, such as Kibi no Makibi and Yuge Kiyobito (the brother of Dà Âkyà Â), which held positions in the imperial palace. Shà Âtoku ordered the construction of a new capital at Yuge in Kawachi Province, and in 769 conscripted thousands of workers to help build the city.Beginning in 764, Shà Âtoku ordered the creation of the , one million miniature wooden stupas, each containing a woodblock-printed prayer from the sutra. These were completed in 770, and distributed among the ten major temples around Nara, each receiving one hundred thousand stupas.
In 766, Shà Âtoku further promoted Dà Âkyà  to , a title alternatively translated as "Prince of the Law" or "Buddhist King", alongside a new palace adjacent to the existing royal palace. This title was similar to both those once granted to Prince Shà Âtoku and those granted to former emperors who took monastic vows. The exact extent of power and duties Shà Âtoku granted to Dà Âkyà  is unclear, but he appeared to have not been given responsibilities outside of religious matters, which he controlled through the , a governing agency established for him that ran in parallel to the Department of Divinities (). He instituted reforms which brought Buddhist elements into the state ideology, including decrees banning hunting dogs and the serving of meat and fish to the emperor. Shà Âtoku reorganized her court, promoting monastic officials to the Council of State for the first time. Shà Âtoku and Dà Âkyà  oversaw the continued construction of the provincial temples in the system (first initiated by Shà Âmu in 741) alongside the creation of new temples such as Saidai-ji in Nara. Shà Âtoku frequently made pilgrimages to the existing great temples of the Yamato Province, bestowing large donations and granting court ranks to their builders.
After Shà Âtoku initiated a new era name in 765, the Tenpyà Â-jingo, Dà Âkyà  oversaw the construction of new temples around major regional shrines, such as the royal Ise Shrine.
In 769, a religious official from the Dazaifu regional government in Kyushu arrived in Nara. He stated that the oracle of the Usa Shrine, a temple of Hachiman (a syncretic Shinto-Buddhist deity) in Kyushu had received a divine message proclaiming that Dà Âkyà  should be proclaimed as emperor in order to ensure the realm's prosperity. Dà Âkyà  was enthusiastic about the news, but Shà Âtoku dispatched an emissary, Wake no Kiyomaro, to visit the shrine and consult with the deity. Wake returned to the court in Nara and proclaimed that Hachiman had ordered that no one outside of the imperial line should ascend to the throne. Dà Âkyà  was outraged, and exiled Wake and his sister, changing both of their names to derogatory puns. The states that Dà Âkyà  dispatched an assassin to kill Wake; after the assassin was delayed by a storm, Wake was pardoned.
While overseeing construction at Yuge in 770, Shà Âtoku fell ill and returned to Nara. She died soon after her return in the eighth month of that year without having selected a successor.
Fujiwara leaders such as Fujiwara no Nagate (the Minister of the Right) and Fujiwara no Momokawa forged an edict from Shà Âtoku proclaiming Prince Shirakabe, a great-grandson of Emperor Tenji and husband to one of Shà Âtoku's half-sisters, Princess Inoe, as her heir. He was enthroned in the tenth month as Emperor Kà Ânin. Shà Âtoku would have almost certainly opposed this choice, as the succession had been previously reserved for descendants of Emperor Tenmu since his death in 686.
Following her death, work on the new capital was halted and Dà Âkyà  was demoted to the steward of a remote eastern Buddhist temple, the Shimotsuke Yakushi-ji. Although the tomb's contents are unidentified, the Imperial Household Agency designates in Misasagi-cho, Nara as Shà Âtoku's tomb.
As no empresses regnant followed in the centuries after her death, Kà Âken is sometimes dubbed the "last empress" or "last classical empress". It would not be until the Edo period, almost a millennium after Kà Âken's death, that two more empresses regnant (Meishà  and Go-Sakuramachi) ruled. By that point, imperial authority had long passed to the Shogunate. Traditional histories attribute the lack of succeeding empresses regnant to Kà Âken's relationship with Dà Âkyo. They generally depict Dà Âkyo's authority as possessing more authority than Empress Shà Âtoku during her second reign, although modern scholars have disputed this interpretation; historian Joan R. Piggott described him as "Shà Âtoku's primary lieutenant", suggesting that, due to his background, he was more beholden to the empress than Nakamaro had been.