Life in Japan and arranged marriage In 1925, the Princess was taken to Japan under the pretense of continuing her studies. Like her brothers, she attended the Gakushuin, where Yukika Sohma was among her schoolmates. In Japan she was known as Princess Tokue (徳恵姫, Tokue-hime). According to Yukika, she was untalkative and struggled with exercising. Upon the news of her mother's death in 1929, Deokhye was finally given permission to visit Korea temporarily, in order to attend the funeral. However, she was not allowed to wear the proper clothing. In the Spring of 1930, upon the onset of a psychological condition (manifested by sleepwalking), she moved to King Yi's Palace, the Tokyo house of her brother, Crown Prince Eun. During this period, she often forgot to eat and drink. Her physician diagnosed her illness as precocious dementia (today called schizophrenia), but by the following year, her condition seemed to have improved. This may be attributed to her upbringing. In May 1931, after "matchmaking" by Empress Teimei, the consort of Emperor Taishō of Japan, Princess Deokhye married Count Sō Takeyuki (武志; 1908–1985), a Japanese aristocrat. The marriage had in fact been decided in 1930. Her brother had protested against it, and it had been postponed because of her condition, but when she recovered, she was immediately given instructions that the wedding was to take place. She gave birth to a daughter, Masae (), or Jeonghye () in Korea, on August 14, 1932. In 1933, Deokhye was again experiencing mental illness, and after this, she spent many years in various mental health clinics. With the defeat of Japan in World War II, Korea once again became independent and her husband lost his noble title, as the Japanese peerage was abolished. Her daughter, Masae, graduated from Waseda University's Department of Literature and met Suzuki Noboru, whom she married in 1955. Her son-in-law would eventually take on her husband’s last name as the heir to the family. As Deokhye continued to be in a poor health condition, and after having permission from Crown Prince Uimin, Sō Takeyuki eventually divorced in 1955; he later remarried to a Japanese woman named Yoshie Katsumura who he had three children with. Having suffered an unhappy marriage, Deokhye's grief was compounded by the loss of her only daughter, who disappeared on 26 August 1956, reportedly committing suicide due to the stress of her parents' divorce. Her daughter’s suicide note