Schedule
| Date | Dead line | Home | Away | Group | Result | Points rule |
|---|---|---|---|---|---|---|
| 04/06/21 11:00 | 04/06/21 11:00 | K3 Changwon City | K3 Daejeon Korail | K3 | 3-1 | 2 - 4 points |
| 04/06/21 12:00 | 04/06/21 12:00 | NAT Korea | xNAT Turkmenistan | NAT | 5-0 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K2 Jeonnam Dragons | K2 Seoul Eland | K2 | 3-0 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K2 Busan | K2 Gyeongnam FC | K2 | 2-3 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K2 Bucheon | K2 Chungnam Asan | K2 | 1-0 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K2 Daejeon Hana Citizens | K2 Anyang | K2 | 1-2 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K1 Gimcheon Sangmu | K2 Ansan Greeners | K2 | 3-0 | 2 - 4 points |
| 05/06/21 05:00 | 05/06/21 05:00 | K4 Chungju Citizen | K4 Yeoju Citizen | K4 | 3-0 | 2 - 4 points |