Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Yanagawa | 2023/12/22 02:45 | Takuya Kumasaka v Taisei Ichikawa | 4-6,4-6 |
| ITF M15 Yanagawa | 2023/12/21 02:50 | Takuya Kumasaka v Yuta Tomida | 7-6,6-0 |
| ITF M15 Ipoh Perak | 2023/11/26 01:30 | Alexey Zakharov v Takuya Kumasaka | 6-0,6-3 |
| ITF M15 Ipoh Perak | 2023/11/25 01:20 | Takuya Kumasaka v Jeamoon Lee | 7-6,6-0 |
| ITF M15 Ipoh Perak | 2023/11/24 02:00 | Takuya Kumasaka v Hayato Matsuoka | 7-6,6-0 |
| ITF M15 Ipoh Perak | 2023/11/23 04:55 | Hikaru Shiraishi v Takuya Kumasaka | 6-7,4-6 |
| ITF M15 Ipoh Perak | 2023/11/22 02:30 | Yeongseok Jeong v Takuya Kumasaka | 6-3,6-7,3-6 |
| ITF M15 Kuching | 2023/11/16 04:05 | Takuya Kumasaka v Kokoro Isomura | 3-6,6-3,6-7 |
| ITF M15 Yanagawa | 2023/12/26 00:30 | Kazuma Kawachi v Shu Muto | 6-1,6-1 |
| ITF M15 Yanagawa | 2023/12/25 00:30 | Kazuma Kawachi v Seiya Nakanishi | 6-3,6-0 |
| ITF M15 Yanagawa | 2023/12/22 07:25 | Sanhui Shin v Kazuma Kawachi | 6-1,6-2 |
| ITF M15 Yanagawa | 2023/12/22 02:10 | Kazuma Kawachi v Ryotaro Matsumura | 6-4,4-6,6-4 |
| ITF M15 Yanagawa | 2023/12/21 00:30 | Yamato Sueoka v Kazuma Kawachi | 2-6,6-3,6-7 |
| ITF M15 Yanagawa | 2023/12/20 03:00 | Kazuma Kawachi v Yuto Oki | 6-2,6-4 |
| Challenger Yokkaichi | 2023/11/26 01:00 | Nathan Ponwith v Kazuma Kawachi | 6-7,6-4,7-5 |
| ITF M25 Mumbai | 2023/11/21 06:20 | Kazuma Kawachi v Siddhant Banthia | 6-3,6-7,1-6 |