, also known simply as Rikyà «, was a Japanese tea master considered the most important influence on the Japanese tea ceremony, particularly the tradition of wabi-cha. He was also the first to emphasize several key aspects of the ceremony, including rustic simplicity, directness of approach and honesty of self. Originating from the Sengoku and AzuchiâÂÂMomoyama periods, these aspects of the tea ceremony persist.
Three iemoto or sà Âke ('head houses') of tea ceremony are directly descended from Rikyà «: the Omotesenke, Urasenke, and Mushakà Âjisenke, all of which are dedicated to passing forward the teachings of their mutual family founder, Rikyà «. They are collectively referred to as .
Rikyà « was born in Sakai, now in Osaka Prefecture. His father was a warehouse owner named , who later in life also used the family name Sen, and his mother was . His childhood name was .
As a young man, Rikyà « studied tea under the townsman of Sakai named Kitamuki Dà Âchin (1504âÂÂ62), and at nineteen, through Dà Âchin's introduction, he began to study tea under Takeno Jà Â'à Â, who is also associated with the development of the wabi aesthetic in tea ceremony. He is believed to have received the Buddhist name from the Rinzai Zen priest Dairin Sà Âtà  (1480âÂÂ1568) of Nanshà «-ji in Sakai. He married a woman known as Hà Âshin Myà Âju (d. 1577) around when he was 21. Rikyà « underwent Zen training at Daitoku-ji in Kyoto. Not much is known about his middle years.
In 1579, at the age of 58, Rikyà « became a tea master for Oda Nobunaga and, following Nobunaga's death in 1582, he was a tea master for Toyotomi Hideyoshi. His relationship with Hideyoshi quickly deepened, and he entered Hideyoshi's circle of confidants, effectively becoming the most influential figure in the world of . In 1585, as he needed extra credentials to enter the Imperial Palace in order to help at a tea gathering that would be given by Hideyoshi for Emperor à Âgimachi, the emperor bestowed upon him the Buddhist lay name and title . Another major event of Hideyoshi's that Rikyà « played a central role in was the Grand Kitano Tea Ceremony, held by Hideyoshi at the shrine of Kitano Tenmangà « in 1587.
It was during his later years that Rikyà « began to use very tiny, rustic chashitsu (tea ceremony rooms) referred as ('grass hermitage'), such as the two-tatami mat tea room named Tai-an, which can be seen today at Myà Âki-an temple in Yamazaki, a suburb of Kyoto, and which is credited to his design. This tea room has been designated as a National Treasure. He also developed many tea utensils, including bamboo flower containers, tea scoops, and lid rests, and used everyday objects in tea ceremony in novel ways.
Raku ware chawan (tea bowls) were originated through his collaboration with a tile-maker named Raku Chà Âjirà Â. Rikyà « preferred simple, rustic, locally-made items to the expensive, Chinese-made items that were fashionable at the time. Though not the inventor of the philosophy of wabi-sabi, which finds beauty in the very simple, Rikyà « is among those most responsible for popularizing it, developing it, and incorporating it into tea ceremony. He developed a new form of tea ceremony using simple instruments and settings. This, along with his other beliefs and teachings, came to be known as (the grass-thatched hermitage style of ), or, more generally, . This line of that his descendants and followers carried on was recognized as the .
A writer and poet, the tea master referred to the ware and its relationship with the tea ceremony, saying, "Though you wipe your hands and brush off the dust and dirt from the vessels, what is the use of all this fuss if the heart is still impure?"
Two of his primary disciples were Nanbà  Sà Âkei (; dates unknown), a somewhat legendary Zen priest; and Yamanoue Sà Âji (1544âÂÂ90), a townsman of Sakai. Another was Furuta Oribe (1544-1615), who became a celebrated tea master after Rikyà «'s death. Nanbà  is credited as the original author of the Southern Record, a record of Rikyà «'s teachings. There is, however, debate over whether Nanbà  even existed, and some scholars argue that his writings were actually by the samurai litterateur Tachibana Jitsuzan (1655-1708), who claimed to have found and transcribed these texts. Yamanoue's chronicle, the (), gives commentary about Rikyà «'s teachings and the state of at the time of its writing.
Rikyà « had a number of children, including a son, Sen no Dà Âan, and a daughter, Okame. This daughter married Sen Shà Âan, the son of Rikyà «'s second wife in a previous marriage. Due to complex circumstances, Sen Shà Âan, rather than Rikyà «'s legitimate heir, Dà Âan, was recognized as the second-generation figure in the Sen family tradition of tea ceremony.
Rikyà « also wrote poetry and practiced ikebana.
One of his favourite gardens was said to be at Chishaku-in in Kyoto.
Although Rikyà « had been one of Hideyoshi's closest confidants, because of crucial differences of opinion and because he was too independent, Hideyoshi ordered him to commit ritual suicide. One year earlier, after the Siege of Odawara (1590), his famous disciple Yamanoue Sà Âji was tortured and decapitated on Hideyoshi's orders. While Hideyoshi's reason may never be known for certain, it is known that Rikyà « committed seppuku at his residence within Hideyoshi's Jurakudai palace in Kyoto in 1591 on the 28th day of the 2nd month (of the traditional Japanese lunar calendar; or April 21 when calculated according to the modern Gregorian calendar), at the age of seventy.
According to Okakura Kakuzà  in The Book of Tea, Rikyà «'s last act was to hold an exquisite tea ceremony. After serving all his guests, he presented each piece of the tea-equipage for their inspection, along with an exquisite kakemono, which Okakura described as "a wonderful writing by an ancient monk dealing with the evanescence of all things". Rikyà « presented each of his guests with a piece of the equipment as a souvenir, with the exception of the bowl, which he shattered, as he uttered the words: "Never again shall this cup, polluted by the lips of misfortune, be used by man." As the guests departed, one remained to serve as witness to Rikyà «'s death. Rikyà «'s last words, which he wrote down as a death poem, were in verse, addressed to the dagger with which he took his own life:
When Hideyoshi was building his lavish residence at Fushimi the following year, he remarked that he wished its construction and decoration to be pleasing to Rikyà «. Hideyoshi was known for his temper, and is said to have expressed regret at his treatment of Rikyà «.
Rikyà «'s grave is located at Jukà Â-in sub-temple in the Daitoku-ji compound in Kyoto; his posthumous Buddhist name is Fushin'an Rikyà « Sà Âeki Koji.
Memorials for Rikyà « are observed annually by many schools of Japanese tea. The Omotesenke school's annual memorial takes place at the family's headquarters each year on March 27, and the Urasenke school's takes place at its own family's headquarters each year on March 28. The three Sen families (Omotesenke, Urasenke, Mushakà Âjisenke) take turns holding a memorial service on the 28th of every month, at their mutual family temple, the subsidiary temple Jukà Âin at Daitoku-ji temple.
The () ('Seven Foremost Disciples', 'Seven Luminaries') is a set of seven high-ranking daimyà  or generals who were also direct disciples of Sen no Rikyà «: Maeda Toshinaga, Gamà  Ujisato, Hosokawa Tadaoki, Furuta Oribe, Makimura Toshisada, Dom Justo Takayama, and Shibayama Munetsuna. The seven-member set was first mentioned by Rikyà «'s grandson Sen no Sà Âtan. In a 1663 list given by Sà Âtan's son (and fourth-generation head of the Sen Sà Âsa lineage of tea masters), Maeda Toshinaga is replaced by Seta Masatada.