Kosei Fukunaga

She was born Aisin-Gioro Husheng at Juntendo University Hospital in Tokyo, Japan on 13 March 1940 to Pujie and Hiro Saga.

Following the surrender of Japan, during the Evacuation of Manchukuo in the midst of the Soviet invasion of Manchuria in August 1945, Husheng's uncle Puyi planned for the imperial family members including Empress Wanrong, Li Yuqin and Husheng herself to escape to Korea by train, they first departed for Dalizi [zh].

While they were at Dalizi, her uncle asked her mother Saga to oversee the imperial family members and provided her with precious antiques and cash to pay for their way south to Korea.

Back in Japan, they were reunited with Huisheng and stayed at their maternal grandfather Marquis Saneto Saga's house.

Husheng and her elder sister Huisheng were educated at various prestigious private schools, including the Gakushūin in Tokyo.

Her parents were then reunited and settled in Beijing, while Husheng returned to Japan and became a Japanese citizen through naturalization.