The , formerly Girls Professional Baseball League until 2012, was the highest level of women's baseball in Japan. The league folded in 2021, holding its final season in 2019.
On 26 August, it was announced that the league would suffer from severe contraction if new investors were not found and crowd number would not increase. On 9 November, it was announced that over half of the league's players had been released ahead of the 2020 season. In December 2021, the league announced it would shut down indefinitely.