The Japanese government is implementing a plan to make all publicly funded research output free to read, with the science ministry assigning funding to universities to build the necessary infrastructure. Researchers who receive government funding will be required to make their papers freely available to read on institutional repositories from April 2025. This move follows the introduction of Plan S, an open-access initiative by a group of research funders in the US and Europe. The plan aims to accelerate the move to open-access publishing.