| ITF W15 Kawaguchi | 2023/06/14 05:00 | Haine Ogata v Honori Koyama | 6-1,6-1 |
| ITF W15 Kawaguchi | 2023/06/13 05:15 | Honori Koyama v Riko Kikawada | 6-2,5-7,10-6 |
| ITF W15 Kawaguchi | 2023/06/13 00:00 | Honori Koyama v Honami Sodeyama | 6-1,6-4 |
| ITF W15 Kashiwa | 2023/06/05 01:00 | Honori Koyama v Kurumi Tamura | 6-7,3-6 |
| ITF W25 Karuizawa | 2023/05/22 00:30 | Honori Koyama v Ai Yamaguchi | 3-6,4-6 |
| ITF W15 Fukui | 2023/04/26 06:50 | Honori Koyama v Rinon Okuwaki | 2-6,2-6 |
| ITF W15 Fukui | 2023/04/25 01:00 | Britney Chiu v Honori Koyama | 2-6,3-6 |
| ITF W15 Fukui | 2023/04/24 01:00 | Sera Nishimoto v Honori Koyama | 4-6,2-6 |