[citation needed] She reached her biggest final at the 2018 French Open with partner Makoto Ninomiya,[2] losing to sixth seeds Barbora Krejčíková and Kateřina Siniaková.

[3] Alongside Jang Su-jeong, Hozumi was runner-up in the doubles at the 2023 Swedish Open, losing to Misaki Doi and Rebecca Peterson in the final.

[5][6] Partnering with Shuko Aoyama, Hozumi won the doubles title at the 2024 Pan Pacific Open, defeating Ena Shibahara and Laura Siegemund in the final.

[7] The pair were runners-up at the 2024 Hong Kong Open, losing to Ulrikke Eikeri and Makoto Ninomiya in the final which went to a deciding champions tiebreak.

[8] Only main-draw results in WTA Tour, Grand Slam tournaments, Fed Cup/Billie Jean King Cup and Olympic Games are included in win–loss records and career statistics.