Giwan was born in Shuri to an aristocratic family, and inherited from his father Ginowan magiri as his domain, along with the title of Ginowan ueekata in 1835. He would have his title changed to "Giwan ueekata" in 1875 when the king's second son Shō In was named "Prince of Ginowan". He served many years in the bureaucracy, and was dispatched on missions to China and Japan on a number of occasions. He became a member of the Sanshikan in 1862, and on account of his experience, continued to lead missions overseas. The Tokugawa shogunate fell in Japan in 1868, to be replaced by a new Imperial government. Three years later, in which a number of Okinawans, shipwrecked on Taiwan, were killed by natives there developed into disputes between the Japanese Imperial government and that of Qing Dynasty China over sovereignty or suzerainty over Okinawa. After discussions in the Okinawan royal capital of Shuri with Japanese representatives of Satsuma Domain, the Japanese government summoned King Shō Tai to Tokyo to further discuss the political status of the Ryūkyū Kingdom vis-a-vis Japan. So as to not imply his subordination to the Meiji Emperor by appearing before him himself, Shō Tai feigned illness and sent a mission on his behalf, led by his uncle Prince Ie, and by Giwan Chōho. The mission was also to serve to officially present congratulations from the kingdom on the occasion of the birth of the new Imperial Japanese government. Similar missions had journeyed to Edo in the past, on the occasion of the accession of a new shōgun. As had occurred on the occasions of such previous missions, Giwan and his party presented a number of gifts to the Japanese, and were well received and well-treated. The ambassadors took part in a variety of activities organized by the Ministry of Foreign Affairs, including meeting with Ainu chiefs and attending the opening of the first railway in Japan. On October 14, 1872, the ambassadors were presented with an imperial decree, stating that the Ryūkyū Kingdom was to become Ryukyu Domain, a province within the Japanese nation, with Shō Tai as governor. While this brought to an end the identity of the kingdom as an independent foreign nation, and the absorption of the islands into the Japanese state, it also meant an end to over 250 years of the kingdom's subordination to Satsuma. Giwan and his party returned to Okinawa with this news, and a new mission was sent presently to Tokyo to work out details of this new political arrangement, while Giwan remained at Shuri. For a brief time, it seemed that Ryukyu was to enjoy a newfound degree of self-rule, with Shō Tai serving as governor of the domain. Though the system of han, or feudal domains, had been abolished even before Ryukyu Domain was established, the system of prefectures had yet to be put into place. Thus, for this brief time, Shō Tai was Governor of Ryukyu, and not Lord or daimyō as the rulers of the han were up until then. However, several years later, in 1875, Giwan, along with a number of other government ministers and royals, received a mission led by Matsuda Michiyuki, Chief Secretary of the Home Ministry. Matsuda oversaw the implementation of a number of wide-ranging political changes and other systematic changes concordant with the incorporation of Ryukyu into Japan, including the establishment of a permanent military garrison in the Ryukyus. Giwan came under attack, as did all officials who had negotiated with the Japanese or accepted their terms, and was forced to resign from public office. He retired to the countryside, and died the following year.
