| 2021-04-30 |  Nothing But... Pure Dance, Vol. 02 @ Nothing But @ 2021-04-30 | 11 | Dance / Electro Pop | OUKI - Undecover (Original Mix)3:30 | |
| 2020-12-09 |  Undecover @ Jin Records @ 2020-12-09 | 1 | Dance / Electro Pop | OUKI - Undecover (Original Mix)3:30 | |
| 2020-06-06 |  Distant Road @ Jin Records @ 2020-06-06 | 1 | Mainstage | OUKI - Distant Road (Original Mix)3:10 | |
| 2019-03-09 |  MainStage Music @ Echo Stage Records @ 2019-03-08 | 1 | Mainstage | OUKI - MainStage Music (Original Mix)3:20 | |