02.04.18 | 1st round | Kyoka Okamura/Ayaka Okuno | Akiko Omae/Peangtarn Plipuech | 6-2, 7-5 | | match details | Kashiwa | Hard |
02.04.18 | 1/4 | Kyoka Okamura/Ayaka Okuno | Alina Silich/Karman Kaur Thandi | 6-4, 6-72, 10-1 | | match details |
02.04.18 | 1/2 | Kyoka Okamura/Ayaka Okuno | Erina Hayashi/Momoko Kobori | 2-6, 6-2, 10-7 | | match details |
02.04.18 | fin | Kyoka Okamura/Ayaka Okuno | Na-Lae Han/Robu Kajitani | 6-2, 6-2 | | match details |
26.03.18 | 1st round | Kyoka Okamura/Ayaka Okuno | Jia Qi Kang/Mai Minokoshi | 6-2, 6-4 | | match details | Kofu | Hard |
26.03.18 | 1/4 | Robu Kajitani/Megumi Nishimoto | Kyoka Okamura/Ayaka Okuno | 6-3, 3-6, 10-7 | | match details |
12.03.18 | 1st round | Kyoka Okamura/Ayaka Okuno | Michiru Furuya/Yuika Sano | 6-0, 6-4 | | match details | Toyota | Hard |
12.03.18 | 1/4 | Junri Namigata/Erika Sema | Kyoka Okamura/Ayaka Okuno | 6-4, 6-74, 10-8 | | match details |
05.03.18 | 1st round | Kyoka Okamura/Ayaka Okuno | Megumi Nishimoto/Suzuho Oshino | 6-2, 4-6, 16-14 | | match details | Yokohama | Hard |
05.03.18 | 1/4 | Haruka Kaji/Ayano Shimizu | Kyoka Okamura/Ayaka Okuno | 6-4, 6-1 | | match details |