His Imperial Highness was conferred the title of Prince Akishino by His Majesty The Emperor upon his marriage on June 29, 1990.
Their Imperial Highnesses Prince and Princess Akishino attend various court ceremonies including New Year's celebrations, as well as other court functions held at the Imperial Palace.
Prince and Princess Akishino attend a wide variety of official events around the country, occasionally with Princess Mako and Princess Kako. These include the Sea Festival, the All Japan Senior High School Cultural Festival, the Fukuoka Prize Award Ceremony, the National Sports Festival and the National Urban Greenery Fairs. On such occasions Their Imperial Highnesses take the opportunities to visit the regions of Japan. In addition, Their Imperial Highnesses attend a wide variety of events in Tokyo that include the Greenery for Life Festival, the awards ceremonies of the Japan Water Prize and the Stockholm Junior Water Prize, the Blue Planet Prize, and the Japan Students Science awards.
Prince and Princess Akishino assumed, together with Their Imperial Highnesses The Crown Prince and Crown Princess, the duties of visiting facilities related to “Children’s Day” and “Respect for the Aged Day” from Their Majesties The Emperor and Empress since 2015.
Their Imperial Highnesses attend various memorial services to honor the memory of the victims of the Second World War, the Great Kanto Earthquake of 1923 and the Great East Japan Earthquake of 2011.
As part of their official activities, at their residence, Their Imperial Highnesses meet with important visitors from Japan and overseas, as well as distinguished experts in various fields, trainee groups, and delegations from overseas.
Their Imperial Highnesses have made official visits to foreign countries. Recent among these were the visit to the Republic of Zambia and the United Republic of Tanzania, on the occasion of the 50th anniversary of diplomatic relations between Japan and the Republic of Zambia, and to foster cordial relations at the invitation of Tanzania in June to July 2014, the visit to the Republic of Guatemala and the United Mexican States, to foster cordial relations at the invitation of Guatemala, and on the occasion of the “Japan-Mexico Exchange Year” in commemoration of the 400th anniversary of the arrival of the Hasekura Mission to Mexico in October 2014, and the visit to the Federative Republic of Brazil on the occasion of the 120th anniversary of diplomatic relations between Japan and the Federative Republic of Brazil in October to November 2015, and the visit to the Italian Republic on the occasion of the 150th anniversary of diplomatic relations between Japan and the Italian Republic in May 2016, and the visit to the Republic of Chile on the occasion of the 120th anniversary of diplomatic relations between Japan and the Republic of Chile in September 2017. Also, Their Imperial Highnesses visited the Kingdom of Thailand to attend the offering of the sandalwood flowers at the Royal Cremation Ceremony for His Majesty the late King Bhumibol Adulyadej in October 2017.
Besides the various official duties and public activities, Prince Akishino carries out research on the domestication of animals from their wild progenitors. The main focus of his research is the process of domestication of chickens; namely, how chickens coexist with humans and the factors in the breeding of varieties once chickens were domesticated. In September 1996, the Graduate University for Advanced Studies conferred the degree of Ph.D. in science on His Imperial Highness for his thesis on the origins of chickens and their domestication entitled, "Molecular Phylogeny of Junglefowls, genus Gallus and Monophyletic Origin of Domestic Fowls." In addition to research based in Japan, Prince Akishino has made visits to the Republic of Indonesia in 1993 and 1994, to Yunnan Province in the People's Republic of China in 1998 with Princess Akishino, and to the Kingdom of Thailand and Lao People's Democratic Republic in 2001. Prince Akishino visited the Kingdom of Thailand again in 2005, and visited the Republic of Madagascar in 2007 and Lao People's Democratic Republic in 2010 with Princess Mako in connection with his research. He also visited Viet Nam in 2012, and visited Hungary with Princess Mako in 2017.
His Imperial Highness has visited the Kingdom of Thailand on many occasions in the course of research on fisheries and on the domestication of chickens, and has published the results of research in a number of academic papers. His Imperial Highness has received honorary doctorates from the following universities, in recognition of his contribution to the promotion of fisheries and poultry science in Thailand: Kasetsart University (Science (Fishery Biology), September 1995); Burapha University (Science, September 1995); Khon Kaen University (Science (Fisheries), July 1999); Srinakharinwirot University (Science, August 2001); Chulalongkorn University (Science, August 2001); Ubon Ratchathani University (Science (Agriculture), August 2003); King Mongkut's Institute of Technology Ladkrabang (Science (Fisheries), March 2007); Kasetsat University (Science (Animal) Science, March 2011), Chiang Mai University (Arts (Human and Environment Management), March 2011) and Thammasat University (Science, (Agricultural Technology), November 2012).
Her Imperial Highness Princess Akishino, besides the official duties and public activities alongside His Imperial Highness Prince Akishino, assumed the role of Patroness of the Japan Anti-Tuberculosis Association (JATA) in April 1994. As the Patroness, Her Imperial Highness attends various ceremonial events such as the Anti-Tuberculosis National Convention, the Central Training Seminar for branch leaders of the National Federation of Community Women's Organizations for TB Control, the presentation ceremony of citations to donors, and meetings with specialists who participate in the international training courses on TB control. Also, Princess Akishino assumed the role of the President of the Imperial Gift Foundation Boshi-Aiiku-Kai in October 2010. Her Imperial Highness attends its annual national conventions and has visited various regions to encourage the activities of community volunteers of Aiiku-Han groups, which promote community networking in such areas as parenting support, and support for the elderly living alone. Her Imperial Highness also attends the Regional Meetings and ceremonies of the Japanese Red Cross Society in her capacity as Honorary Vice-President of the organization.
Her Imperial Highness continues her studies in between her official activities. Her Imperial Highness has mastered sign language as an important means of communication with persons with speech and hearing impairments, and attends the ceremony of "Praising Mothers Raising Children with Hearing Impairments"every year. In recent years, Her Imperial Highness attended the 50th Conference of the Japanese Deaf Education Association on the subject of “Further Advancing and Sharing Expertise in Enhancing the Quality of Education for Persons with Hearing Impairments”, and visited Working Group Sessions for Junior High School and Senior High School Advanced Course classes on the occasion in 2016.
In March 1995, Her Imperial Highness received a Master's degree in psychology. Her Imperial Highness cares about supporting female researchers who restart research activities after childbirth and childcare care, and attends presentations by researchers supported by "Research Fellowship for Young Scientists - Restarted Post - Doctoral fellowship" of the Japan Society for the Promotion of Science. Her Imperial Highness carries out research in areas related to health care, and was nominated as the Honorary Research Fellow of the Japan Society for the Promotion of Science in February 2009. In March 2013, Her Imperial Highness was granted Ph.D. in psychology at the Graduate School of Humanities and Sciences, Ochanomizu University, for her thesis titled "Knowledge, perceptions, beliefs and behaviors related to tuberculosis: A study based on questionnaire surveys with seminar participants of the National Federation of Community Women's Organizations for TB Control and female college students."
Her Imperial Highness Princess Mako reached the age of twenty and was conferred Grand Cordon of the Order of Precious Crown in October 2011. Her Imperial Highness graduated from the Division of Arts and Science, the College of Liberal Arts, International Christian University in March 2014. Thereafter, Her Imperial Highness continued her study in a postgraduate course of Museum Studies, University of Leicester, the United Kingdom, and received a Master of Arts in January 2016. In April 2016, Her Imperial Highness was nominated as an Affiliate Researcher of The University Museum, The University of Tokyo. Her Imperial Highness enrolled in the doctoral course in the Division of Arts and Science, The International Christian University Graduate School in September 2016.
Her Imperial Highness attends court ceremonies and functions at the Imperial Palace, as well as official events elsewhere frequently. Her Imperial Highness assumed the role of Honorary Patron of the Japan Tennis Association in October 2015, and presented the Emperor’s Cup at the presentation ceremony of the All Japan Tennis Championships. Her Imperial Highness also assumed the role of Patron of the Japan Kōgei Association in June 2016, and selected the Patron of the Japan Kōgei Association Prize and the Prince Takamatsu Memorial Prize of the Japan Traditional Kōgei Exhibition, and attended the presentation ceremony.
Her Imperial Highness has made official visits to the Republic of El Salvador and the Republic of Honduras, on the occasion of the 80th anniversary of diplomatic relations between Japan and the Republic of El Salvador, and between Japan and the Republic of Honduras, in December 2015, and to the Republic of Paraguay in September 2016, to commemorate the 80th anniversary of the immigration of Japanese to the Republic of Paraguay, and to the Kingdom of Bhutan in May to June 2017 on the occasion of the Inauguration Ceremony of the 3rd Royal Bhutan Flower Exhibition 2017.
Her Imperial Highness Princess Kako reached the age of twenty and was conferred Grand Cordon of the Order of Precious Crown in December 2014. Since then, Her Imperial Highness has been attending court ceremonies and functions at the Imperial Palace, as well as official events elsewhere such as the All-Japan High School Equestrian Competition and the All Japan Senior High School Cultural Festival in 2017.
Her Imperial Highness is an undergraduate in the Division of Arts and Science, the College of Liberal Arts, International Christian University, and is currently studying at the University of Leeds in the United Kingdom as an exchange student from September 2017 to June 2018.
His Imperial Highness Prince Hisahito is attending Ochanomizu University Elementary School, and is growing up in good health.