Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Tsukuba | 2024/03/31 02:30 | Hikaru Shiraishi v Kokoro Isomura | 6-1,6-3 |
| ITF M25 Sapporo | 2024/09/13 01:00 | Masamichi Imamura v Kokoro Isomura | 6-4,7-6 |
| ITF M25 Sapporo | 2024/09/12 01:00 | Yuta Kikuchi v Kokoro Isomura | 3-6,4-6 |
| ITF M25 Sapporo | 2024/09/11 06:00 | Daiki Yoshimura v Kokoro Isomura | 5-7,0-6 |
| ITF M25 Sapporo | 2024/09/08 02:00 | Kokoro Isomura v Naoki Nakagawa | 6-3,6-2 |
| ITF M25 Sapporo | 2024/09/07 01:00 | Yuta Kawahashi v Kokoro Isomura | 3-6,0-6 |
| ITF M25 Sapporo | 2024/09/06 01:00 | Kokoro Isomura v Keisuke Saitoh | 6-2,6-4 |
| ITF M25 Sapporo | 2024/09/05 03:50 | Kokoro Isomura v Ryotaro Taguchi | 6-4,6-4 |
| ITF M25 Sapporo | 2024/09/04 01:00 | Aidan Mchugh v Kokoro Isomura | 6-7,6-7 |
| ITF M25 Sapporo | 2024/09/10 01:00 | Jacob Brumm v Hikaru Shiraishi | 6-1,6-3 |
| ITF M25 Sapporo | 2024/09/06 03:50 | Hikaru Shiraishi v Naoki Nakagawa | 7-6,6-7,1-6 |
| ITF M25 Sapporo | 2024/09/05 01:00 | Hikaru Shiraishi v Kousuke Ogura | 3-6,6-1,6-3 |
| ITF M25 Sapporo | 2024/09/03 01:00 | Hikaru Shiraishi v Yuki Mochizuki | 6-2,5-7,6-2 |
| ITF M25 Taipei | 2024/08/06 02:00 | Arthur Weber v Hikaru Shiraishi | 6-2,6-2 |
| ITF M25 Taipei | 2024/08/01 03:45 | Arthur Weber v Hikaru Shiraishi | 6-2,7-5 |
| ITF M25 Taipei | 2024/07/31 02:00 | Hikaru Shiraishi v Taiyo Yamanaka | 6-4,6-2 |
| ITF M15 Tokyo | 2024/07/11 01:50 | Woobin Shin v Hikaru Shiraishi | 6-4,6-4 |