| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Yasuhiro KOSEKI | 200 L Breast | Finals | 2:08.49 |
| 2 | Ryuya MURA | 200 L Breast | Finals | 2:10.05 |
| 3 | Syoma SATOU | 200 L Breast | Finals | 2:10.13 |
| 4 | Syoma SATOU | 200 L Breast | Prelims | 2:10.43 |
| 5 | KAZUKI KOHINATA | 200 L Breast | Finals | 2:10.49 |
| 6 | Ryuya MURA | 200 L Breast | Prelims | 2:10.59 |
| 7 | Daiya SETO | 400 L IM | Timed Finals | 4:11.41 |
| 8 | Yasuhiro KOSEKI | 100 L Breast | Finals | 59.01 |
| 9 | Nao HOROMURA | 200 L Fly | Finals | 1:55.25 |
| 10 | Katsuhiro MATSUMOTO | 100 L Free | Finals | 48.59 |
| Name | Event | Round | Time |
No relays to show |
|---|---|---|---|---|
| Name | Gold | Silver | Bronze | Score | FINA | |
|---|---|---|---|---|---|---|
| 1 | Daiya SETO | 1 | 0 | 0 | – | 912.0 |
| 2 | Syogo TAKEDA | 1 | 0 | 0 | – | 867.5 |
| 3 | Nao HOROMURA | 1 | 0 | 0 | – | 808.7 |
| 4 | Yasuhiro KOSEKI | 0 | 2 | 1 | – | 916.0 |
| 5 | Ayatsugu HIRAI | 0 | 1 | 0 | – | 871.0 |
