Round: 28 Ground: Hardcourt outdoor
| ITF Japan F4 MD | 2018/03/29 05:50 | Gao/Wang v Ehara/Hazawa | 3-6,2-6 |
| ITF Japan F4 MD | 2018/03/27 03:55 | Imamura/Itsusaki v Ehara/Hazawa | 3-6,6-7 |
| ITF Japan F4 MD | 2018/03/29 07:20 | Te/Wang v Nakagawa/Uesugi | 2-6,1-6 |
| ITF Japan F4 MD | 2018/03/28 05:55 | Ochi/Tanuma v Nakagawa/Uesugi | 6-7,4-6 |