All countries
| 11th place | Japan U21 | South Korea U21 | 3:1 (25:18, 19:25, 25:22, 25:21) | details | 31.08.2025 | ||
| Semi-finals | Bulgaria U21 | Japan U21 | 3:1 (25:20, 12:25, 25:17, 25:22) | details | 30.08.2025 | ||
| Quarter-finals | Japan U21 | Argentina U21 | 3:2 (27:29, 25:16, 22:25, 25:19, 15:13) | details | 29.08.2025 | ||
| 1/8-finals | Japan U21 | China U21 | 2:3 (25:17, 23:25, 21:25, 27:25, 13:15) | details | 27.08.2025 | ||
| Group C | Czech Republic U21 | Japan U21 | 3:1 (23:25, 25:19, 27:25, 25:22) | details | 26.08.2025 | ||
| Group C | Colombia U21 | Japan U21 | 0:3 (16:25, 11:25, 14:25) | details | 25.08.2025 | ||
| Group C | Japan U21 | Cuba U21 | 3:0 (25:23, 25:17, 25:8) | details | 23.08.2025 | ||
| Group C | Bulgaria U21 | Japan U21 | 2:3 (25:22, 20:25, 18:25, 25:23, 12:15) | details | 22.08.2025 | ||
| Group C | Brazil U21 | Japan U21 | 0:3 (21:25, 23:25, 20:25) | details | 21.08.2025 | ||
| 13th place | USA U21 | Japan U21 | 1:3 (25:23, 23:25, 15:25, 20:25) | details | 02.07.2017 | ||
| Semi-finals | Japan U21 | Czech Republic U21 | 3:2 (22:25, 20:25, 25:21, 25:15, 15:13) | details | 01.07.2017 | ||
| Group H | Turkey U21 | Japan U21 | 1:3 (21:25, 22:25, 25:23, 20:25) | details | 29.06.2017 | ||
| Group H | Japan U21 | Ukraine U21 | 1:3 (23:25, 14:25, 26:24, 21:25) | details | 28.06.2017 | ||
| Group H | Morocco U21 | Japan U21 | 1:3 (19:25, 20:25, 25:22, 21:25) | details | 27.06.2017 | ||
| Group D | Brazil U21 | Japan U21 | 3:0 (25:23, 25:20, 25:21) | details | 25.06.2017 | ||
| Group D | Egypt U21 | Japan U21 | 1:3 (17:25, 25:17, 26:28, 23:25) | details | 24.06.2017 | ||
| Group D | China U21 | Japan U21 | 3:1 (25:21, 25:23, 22:25, 25:16) | details | 23.06.2017 | ||
| 13th place | Japan U21 | Cuba U21 | 0:3 (21:25, 19:25, 16:25) | details | 20.09.2015 | ||
| Semi-finals | Japan U21 | Egypt U21 | 3:1 (25:18, 27:29, 25:21, 25:20) | details | 19.09.2015 | ||
| Group G | USA U21 | Japan U21 | 3:1 (25:23, 17:25, 25:20, 25:23) | details | 17.09.2015 | ||
| Group G | Japan U21 | Iran U21 | 1:3 (25:27, 25:18, 19:25, 21:25) | details | 17.09.2015 | ||
| Group G | Mexico U21 | Japan U21 | 0:3 (20:25, 16:25, 15:25) | details | 16.09.2015 | ||
| Group D | Japan U21 | Italy U21 | 1:3 (20:25, 25:23, 28:30, 12:25) | details | 14.09.2015 | ||
| Group D | Slovenia U21 | Japan U21 | 3:1 (17:25, 25:23, 25:21, 25:22) | details | 12.09.2015 | ||
| Group D | France U21 | Japan U21 | 3:1 (25:23, 26:24, 22:25, 25:21) | details | 12.09.2015 | ||
| 9th place | Serbia U21 | Japan U21 | 3:0 (25:16, 25:21, 25:23) | details | 01.09.2013 | ||
| Semi-finals | Japan U21 | Canada U21 | 3:2 (18:25, 25:20, 25:17, 26:28, 17:15) | details | 31.08.2013 | ||
| Quarter-finals | Japan U21 | Tunisia U21 | 3:1 (23:25, 25:17, 25:23, 25:19) | details | 30.08.2013 | ||
| 1/8-finals | India U21 | Japan U21 | 3:0 (25:18, 25:23, 25:20) | details | 28.08.2013 | ||
| Group B | Iran U21 | Japan U21 | 3:0 (28:26, 29:27, 25:18) | details | 25.08.2013 | ||
| Group B | Japan U21 | Argentina U21 | 0:3 (26:28, 20:25, 26:28) | details | 24.08.2013 | ||
| Group B | Estonia U21 | Japan U21 | 3:2 (27:29, 25:23, 19:25, 26:24, 15:8) | details | 23.08.2013 | ||
| Group B | Japan U21 | Mexico U21 | 3:1 (23:25, 29:27, 25:17, 25:16) | details | 22.08.2013 | ||
| Brazil U21 | Japan U21 | 3:0 (27:25, 25:23, 25:21) | details | 16.08.2013 | |||
| 11th place | Canada U21 | Japan U21 | 3:0 (25:23, 25:20, 25:19) | details | 10.08.2011 | ||
| Semi-finals | Belgium U21 | Japan U21 | 3:0 (25:19, 25:22, 25:18) | details | 09.08.2011 | ||
| Group G | Egypt U21 | Japan U21 | 2:3 (18:25, 25:15, 25:20, 21:25, 14:16) | details | 07.08.2011 | ||
| Group G | Japan U21 | Tunisia U21 | 3:0 (25:19, 25:20, 25:18) | details | 06.08.2011 | ||
| Group G | Japan U21 | Canada U21 | 0:3 (12:25, 17:25, 14:25) | details | 05.08.2011 | ||
| Group A | USA U21 | Japan U21 | 3:1 (25:20, 21:25, 25:18, 25:19) | details | 03.08.2011 | ||
| Group A | Japan U21 | Bulgaria U21 | 3:2 (20:25, 20:25, 33:31, 25:18, 15:11) | details | 02.08.2011 | ||
| Group A | Brazil U21 | Japan U21 | 2:3 (25:21, 19:25, 20:25, 25:22, 16:18) | details | 01.08.2011 | ||