During Sun's exile in Japan, he had relationships with two Japanese women: the 15-year-old Haru Asada, whom he took as a concubine up to her death in 1902, and another 15-year-old schoolgirl, Kaoru Otsuki, whom Sun married in 1905 and abandoned the next year while she was pregnant.[152] Otsuki later had their daughter, Fumiko, adopted by the Miyagawa family in Yokohama, who did not discover her parentage until 1951,[152] 26 years after Sun's death.

https://en.wikipedia.org/wiki/Sun_Yat-sen