| Championship | Event | # | Competitors |
|---|---|---|---|
| National Team Open 2012 | 4x50m Medley Relay | 7 |
Japan National Team
(JPN) Hikaru KIKUCHI, Shun NISHIYAMA, Masaya SHIMIZU, Ryohei SUZUKI |
| National Team Open 2012 | 4x50m Obstacle Relay | 8 |
Japan National Team
(JPN) Hikaru KIKUCHI, Shun NISHIYAMA, Masaya SHIMIZU, Ryohei SUZUKI |