Stadium: Court 8 Round: 26 Ground: Hardcourt outdoor
| ITF Women Kofu WD | 2018/06/15 08:00 | Doi/Eguchi v Arakawa/Luangnam | 6-2,7-6 |
| ITF Women Kofu WD | 2018/06/14 05:20 | Arakawa/Luangnam v Kajitani/Matsumoto | 6-2,4-6,10-5 |
| ITF Women Kofu WD | 2018/06/13 04:15 | Dokei/Ozeki v Arakawa/Luangnam | 4-6,1-6 |