Ground: Hardcourt outdoor
| ITF M15 Tokyo | 2025/07/03 01:00 | Shu Matsuoka v Jangjun Kim | 6-2,6-2 |
| ITF M15 Tokyo | 2025/07/02 01:00 | Jangjun Kim v Kokoro Isomura | 4-6,6-4,6-6 |
| ITF M15 Daegu | 2025/05/29 03:45 | Jangjun Kim v Suk Hyun Choo | 4-6,4-6 |
| ITF M15 Daegu | 2025/05/27 01:00 | Jangjun Kim v Donghyun Hwang | 4-6,6-3,6-4 |
| ITF M15 Anseong | 2024/06/12 01:00 | Kenta Miyoshi v Jangjun Kim | 6-3,4-6,7-5 |
| ITF M15 Kashiwa | 2024/04/04 05:05 | Yu Hsiou Hsu v Jangjun Kim | 6-3,6-2 |
| ITF M15 Kashiwa | 2024/04/02 04:50 | Jangjun Kim v Hoyoung Roh | 6-4,4-6,7-6 |
| ITF M15 Tsukuba | 2024/03/27 06:35 | Jangjun Kim v Ryotaro Taguchi | 2-6,0-6 |
| ITF M15 Tokyo | 2025/07/10 06:19 | Shunsuke Mitsui v Renta Tokuda | 0-3 |
| ITF M15 Tokyo | 2025/07/08 07:25 | Shunsuke Mitsui v Tai Leonard Sach | 5-7,7-5,6-4 |
| ITF M25 Luzhou | 2025/06/21 04:55 | Jie Cui v Shunsuke Mitsui | 0-6,6-3,4-0 |
| ITF M25 Luzhou | 2025/06/20 03:00 | Mitsuki Wei Kang Leong v Shunsuke Mitsui | 3-6,1-6 |
| ITF M25 Luzhou | 2025/06/19 03:30 | Shunsuke Mitsui v Egor Gerasimov | 6-3,3-6,6-2 |
| ITF M25 Luzhou | 2025/06/18 02:00 | Shunsuke Mitsui v Pawit Sornlaksup | 7-6,6-2 |
| ITF M15 Luan | 2025/06/15 02:30 | Shunsuke Mitsui v Wishaya Trongcharoenchaikul | 7-6,6-1 |
| ITF M15 Luan | 2025/06/14 04:30 | Shunsuke Mitsui v Siddharth Vishwakarma | 3-0 |