Stadium: Green Tennis Plaza - Court 03 Ground: Hardcourt outdoor
Referee:
| UTR Pro Miki Women | 2023/02/16 05:00 | Yuna Ohashi v Honori Koyama | 7-6,7-6 |
| ITF W15 Kayseri | 2025/05/30 07:00 | Maria Kalyakina v Yuna Ohashi | 6-4,6-3 |
| ITF W15 Kayseri | 2025/05/27 10:17 | Yuna Ohashi v Veronika Lutsenko | 6-3,6-3 |
| ITF W50 Kurume | 2025/05/12 04:25 | Mayuka Aikawa v Yuna Ohashi | 6-1,6-3 |
| UTR Pro Kawaguchi Women | 2025/04/28 04:15 | Kanako Osafune v Yuna Ohashi | 4-6,0-6 |
| UTR Pro Kawaguchi Women | 2025/04/25 01:00 | Yuna Ohashi v Rina Komatsu | 6-4,3-6,2-6 |
| UTR Pro Kawaguchi Women | 2025/04/24 04:35 | Yuna Ohashi v Sera Nishimoto | 3-6,6-2,7-5 |
| UTR Pro Kawaguchi Women | 2025/04/24 00:00 | Kurumi Tamura v Yuna Ohashi | 6-3,6-2 |
| UTR Pro Kawaguchi Women | 2025/04/22 02:35 | Sayuri Hata v Yuna Ohashi | 6-3,6-4 |
| ITF W15 Sapporo | 2025/06/26 02:30 | Honori Koyama v Jeong Moon | 2-6,6-3,4-6 |
| ITF W15 Sapporo | 2025/06/24 04:30 | Ichino Horikawa v Honori Koyama | 5-7,7-6,4-6 |
| ITF W15 Sapporo | 2025/06/18 06:30 | Hayu Kinoshita v Honori Koyama | 6-2,7-6 |
| ITF W15 Osaka | 2025/06/05 02:30 | Honori Koyama v Nao Nishino | 5-7,4-6 |
| ITF W15 Osaka | 2025/06/04 05:25 | Amane Hattori v Honori Koyama | 6-3,4-6,6-7 |
| ITF W15 Fukui | 2025/05/23 01:00 | Shiho Tsujioka v Honori Koyama | 6-3,6-1 |
| ITF W15 Fukui | 2025/05/22 01:00 | Honori Koyama v Mutsumi Uemura | 6-2,6-2 |
| ITF W15 Fukui | 2025/05/21 01:00 | Honori Koyama v Hinata Furutani | 6-4,6-1 |