| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | IPPEI WATANABE | 200 L Breast | Prelims | 2:07.22 |
| 2 | Yasuhiro KOSEKI | 200 L Breast | Finals | 2:07.80 |
| 3 | IPPEI WATANABE | 200 L Breast | Finals | 2:07.87 |
| 4 | Yasuhiro KOSEKI | 200 L Breast | Prelims | 2:07.91 |
| 5 | Kosuke HAGINO | 400 L IM | Finals | 4:06.05 |
| 6 | Yasuhiro KOSEKI | 200 L Breast | Prelims | 2:08.61 |
| 7 | Masato SAKAI | 200 L Fly | Finals | 1:53.40 |
| 8 | Yasuhiro KOSEKI | 100 L Breast | Prelims | 58.91 |
| 9 | Daiya SETO | 400 L IM | Prelims | 4:08.47 |
| 10 | IPPEI WATANABE | 200 L Breast | Prelims | 2:09.63 |
| Name | FINA | |
|---|---|---|
| 1 | Yasuhiro KOSEKI | 966.0 |
| 2 | Masato SAKAI | 951.0 |
| 3 | IPPEI WATANABE | 940.0 |
| 4 | Kosuke HAGINO | 937.3 |
| 5 | Daiya SETO | 930.5 |
