Career
On 6 October 2014, she reached her highest Women's Tennis Association singles ranking of 618. Also on 6 October 2014, she reached her highest Women's Tennis Association doubles ranking of 533. Okamura made her Women's Tennis Association main draw debut at the 2014 Japan Women"s Open, where she received a wildcard entry into the doubles main draw with Kotomi Takahata.
They defeated Misaki Doi and Elina Svitolina in the first round, 6–3, 3–6.
They lost from Darija Jurak and Megan Moulton-Levy in the quarterfinals. Singles (0–5)
Doubles (2–3).