 Japan
                        Japan
                    
                    
                | Performance | Wind | Venue | Date | |
|---|---|---|---|---|
| 4x100 Metres Relay | 46.02 | Kumamoto | 04 AUG 2001 | |
| 4x400 Metres Relay | 3:44.29 | Kumamoto | 06 AUG 2001 | |
| Medley Relay | 2:07.61 | Donetsk | 14 JUL 2013 | 
| Performance | Place | Date | |
|---|---|---|---|
| 2016 | 46.26 | Nagoya (Mizuho) | 01 OCT | 
| 2015 | 46.17 | Nagoya (Mizuho) | 18 OCT | 
| 2002 | 46.35 | Bangkok | 28 OCT | 
| 2001 | 46.02 | Kumamoto | 04 AUG | 
| 1999 | 46.51 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 17 JUL | 
| Performance | Place | Date | |
|---|---|---|---|
| 2002 | 3:44.48 | Bangkok | 31 OCT | 
| 2001 | 3:44.29 | Kumamoto | 06 AUG | 
| Performance | Place | Date | |
|---|---|---|---|
| 2013 | 2:07.61 | Donetsk | 14 JUL | 
| 2011 | 2:10.54 | Lille | 09 JUL | 
| 2009 | 2:10.27 | Bressanone | 12 JUL | 
| 2007 | 2:11.70 | Ostrava | 14 JUL | 
| 2005 | 2:09.72 | Marrakech (Sidi Youssef Ben Ali) | 16 JUL | 
| 2003 | 2:11.34 | Sherbrooke | 13 JUL | 
| 2001 | 2:12.76 | Debrecen | 14 JUL | 
| 1999 | 2:11.72 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 18 JUL | 
| Rank | Mark | Wind | Place | Date | |
|---|---|---|---|---|---|
| 1st IAAF World Youth Championships | 5 | 46.51 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 17 JUL 1999 | 
| Rank | Mark | Wind | Place | Date | |
|---|---|---|---|---|---|
| 8th IAAF World Youth Championships | 3 | 2:07.61 | Donetsk | 14 JUL 2013 | |
| 7th IAAF World Youth Championships | 4h3 | 2:10.54 | Lille | 09 JUL 2011 | |
| 6th IAAF World Youth Championships | 8 | 2:10.27 | Bressanone | 12 JUL 2009 | |
| 5th IAAF World Youth Championships | 7 | 2:12.45 | Ostrava | 15 JUL 2007 | |
| 4th IAAF World Youth Championships | 6 | 2:10.66 | Marrakech (Sidi Youssef Ben Ali) | 17 JUL 2005 | |
| 3rd IAAF World Youth Championships | 5 | 2:11.34 | Sherbrooke | 13 JUL 2003 | |
| 2nd IAAF/Westel World Youth Championships | f | DQ | Debrecen | 15 JUL 2001 | |
| 1st IAAF World Youth Championships | 4 | 2:11.72 | Bydgoszcz (Zdzislaw Krzyszkowiak) | 18 JUL 1999 | 
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