[3][4][5][6] Osaka was born in Japan[citation needed] to a Japanese mother and a Haitian father; shortly thereafter, the family moved to Long Island, New York.

[citation needed] Osaka made her WTA Tour debut at the 2014 Bank of the West Classic, in the doubles event partnering with Marina Shamayko, losing in the first round to the pair Varvara Lepchenko and Ajla Tomljanović.

She made her WTA Tour singles debut at the 2019 Miami Open, having received a wildcard into the main draw, but lost to Whitney Osuigwe.

[8] Since retirement, she has focused on her art and fashion design, including co-designing her sister Naomi's Met Gala look[9] in fall 2021.

Osaka's previous artistic work includes creating custom-designed COVID masks for UNICEF[10] and illustrating the cover for GQ Japan's June 2020 edition featuring her sister.