Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF Women Kashiwa WD | 2018/04/04 06:50 | Omae/Plipuech v Okamura/Okuno | 2-6,5-7 |
| ITF Women Kofu WD | 2018/03/29 05:20 | Okamura/Okuno v Kajitani/Nishimoto | 3-6,6-3,7-10 |
| ITF Women Kofu WD | 2018/03/28 04:25 | Kang/Minokoshi v Okamura/Okuno | 2-6,4-6 |
| ITF Women Toyota WD | 2018/03/15 05:35 | Namigata/Sema v Okamura/Okuno | 6-4,6-7,10-8 |
| ITF Women Toyota WD | 2018/03/13 03:15 | Okamura/Okuno v Furuya/Sano | 6-0,6-4 |
| ITF Women Yokohama WD | 2018/03/08 10:15 | Okamura/Okuno v Kaji/Shimizu | 4-6,1-6 |
| ITF Women Yokohama WD | 2018/03/06 06:05 | Nishimoto/Oshino v Okamura/Okuno | 2-6,6-4,14-16 |
| ITF Women Kashiwa WD | 2018/04/04 07:05 | Silich/Thandi v Arakawa/Shimizu | 7-5,3-6,10-4 |