Incoming
Outgoing
| Rider | Team 2021 |
|---|---|
 Manabu Ishibashi | Retired |
| Shiki Kuroeda | Retired |
| Daiki Magosaki | Retired |
| Keitaro Sawada | Retired |
| Hiratsuka Yoshimitsu | Retired |
| Rider | Team 2021 |
|---|---|
| Manabu Ishibashi | Retired |
| Shiki Kuroeda | Retired |
| Daiki Magosaki | Retired |
| Keitaro Sawada | Retired |
| Hiratsuka Yoshimitsu | Retired |