Stadium: Center Court Round: 54 Ground: Hardcourt outdoor
| 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 |
| UTR Pro Noda | 2023/10/21 00:00 | Sora Fukuda v Kazuma Kawachi | 6-1,5-3 |
| ITF M15 Yanagawa | 2023/12/25 00:30 | Shu Muto v Hong-Lin Fu | 3-6,7-5,10-5 |
| ITF M15 Yanagawa | 2023/12/21 00:30 | Shu Muto v Jumpei Yamasaki | 0-6,2-6 |
| ITF M15 Yanagawa | 2023/12/20 03:00 | Shu Muto v Hong Kit Wong | 5-7,6-4,10-7 |
| ITF M15 Yanagawa | 2023/12/18 03:00 | Tomohiro Masabayashi v Shu Muto | 1-6,7-6,7-10 |