1. Round | 28/02/2021 | Mito HollyHock | - | Omiya Ardija | 1:2 | ||||
3. Round | 13/03/2021 | Júbilo Iwata | - | Mito HollyHock | 3:2 | ||||
4. Round | 21/03/2021 | Mito HollyHock | - | FC Machida Zelvia | 3:0 | ||||
5. Round | 28/03/2021 | Mito HollyHock | - | Matsumoto Yamaga | 3:0 | ||||
6. Round | 04/04/2021 | Tokyo Verdy | - | Mito HollyHock | 2:1 | ||||
7. Round | 11/04/2021 | Mito HollyHock | - | FC Ryūkyū | 0:2 | ||||
8. Round | 17/04/2021 | Fagiano Okayama | - | Mito HollyHock | 1:2 | ||||
9. Round | 21/04/2021 | Mito HollyHock | - | JEF United Chiba | 0:1 | ||||
11. Round | 02/05/2021 | Mito HollyHock | - | V-Varen Nagasaki | 1:0 | ||||
15. Round | 23/05/2021 | Mito HollyHock | - | Ventforet Kofu | 0:1 | ||||
18. Round | 13/06/2021 | Mito HollyHock | - | SC Sagamihara | 2:0 |