The league was originally scheduled to begin on 2 May 2020 but was delayed due to the COVID-19 pandemic. The league was finally rescheduled to begin on 18 July 2020 with the first two rounds of matches played behind closed doors.[1]
The season started on 18 July 2020 and ended in November 2020 with the play-offs to be held days later. Prior to the league start date, PCR were carried out on all the players and staffs of the teams participating in the leagues to check their health conditions, almost all test cases came out negative.[citation needed]
This is its final year as the highest division of the Japan women's football league system as the WE League is set to commence next year. Similar to the men's J. League in 1992 and the English women's FA WSL in 2011, not all Division 1 clubs will be admitted to the new league.[2]
12 teams contested the third tier, divided into two groups of 6 each for East and West. Newly promoted clubs were Shizuoka SSU Asregina (formerly Iwata Bonita) and Fukuoka J. Anclas, both returning to the national tiers, and Cerezo Osaka Sakai Girls, Cerezo Osaka Sakai Ladies's B-team.