| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Ryo YOSHIKAWA | 30/08/2001 | 400 Metres | Heats | 5 | 47.47 |
| M | Fuga SATO | 01/06/1996 | 400 Metres | Heats | 2 | 46.60 |
| M | Yukichi ISHII | 11/06/2002 | 800 Metres | Heats | 4 | 1:48.86 |
| M | Yoshiki KINASHI | 28/09/2001 | 60 Metres | Heats | 2 | 6.60 |
| M | Naoki NISHIOKA | 19/07/2006 | 60 Metres | Heats | 3 | 6.67 |
| M | Naoto HASEGAWA | 15/11/1996 | High Jump | Final | 7 | 2.20 |
| M | Souta HARAGUCHI | 11/10/2004 | High Jump | Final | 13 | 2.14 |
| M | Naoki NISHIOKA | 19/07/2006 | 60 Metres | Semi-Final | 4 | 6.62 |
| M | Yoshiki KINASHI | 28/09/2001 | 60 Metres | Semi-Final | 5 | 6.63 |
| M | Fuga SATO | 01/06/1996 | 400 Metres | Semi-Final | 6 | 48.31 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Yuma MARUYAMA | 03/06/1998 | 60 Metres | Heptathlon | 4 | 7.04 |
| M | Tetsuro NISHI | 05/02/2004 | 60 Metres Hurdles | Heats | 5 | 7.79 |
| M | Yuma MARUYAMA | 03/06/1998 | Long Jump | Heptathlon | 10 | 6.93 |
| M | Yuma MARUYAMA | 03/06/1998 | Shot Put | Heptathlon | 11 | 14.17 |
| M | Yuma MARUYAMA | 03/06/1998 | High Jump | Heptathlon | 8 | 1.92 |
| W | Nozomi TANAKA | 04/09/1999 | 3000 Metres | Final | 10 | 8:47.93 |
| M | Tetsuro NISHI | 05/02/2004 | 60 Metres Hurdles | Semi-Final | 6 | 7.83 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Yuma MARUYAMA | 03/06/1998 | 60 Metres Hurdles | Heptathlon | 5 | 7.93 |
| W | Yumi TANAKA | 15/12/1998 | 60 Metres Hurdles | Heats | 4 | 8.06 |
| M | Yuma MARUYAMA | 03/06/1998 | Pole Vault | Heptathlon | 9 | 4.80 |
| W | Yumi TANAKA | 15/12/1998 | 60 Metres Hurdles | Semi-Final | 5 | 8.03 |
| M | Shunsuke IZUMIYA | 26/01/2000 | Long Jump | Final | 4 | 8.21 |
| M | Hibiki TSUHA | 21/01/1998 | Long Jump | Final | 13 | 7.13 |
| M | Yuma MARUYAMA | 03/06/1998 | 1000 Metres | Heptathlon | 9 | 2:44.54 |