Nara Club and FC Osaka were promoted to the J3 League after being respectively, champions and runners-up of last season's JFL.
This season will be the first to feature promotion/relegation from the Japan Football League, enabling the possibility for teams to be relegated from the J3.
[2] The system of promotion/relegation between the leagues can be determined by the eligibility (Promotion to J3 requires a J.League license) of the JFL's champions and runners-up for the season.
From the 2021 season onwards, there is no limitations on signing foreign players, but clubs could only register up to five of them for a single matchday squad.
[15] Players from J.League partner nations (Thailand, Vietnam, Myanmar, Malaysia, Cambodia, Singapore, Indonesia, and Qatar) were exempted from these restrictions.