The RISC-V Day Tokyo conference is the largest RISC-V event in Japan. The RISC-V Day Tokyo 2025 Spring conference will be held on Thursday, February 27, 2025 from 9:00-18:00 JST (UTC+9) at the Ito International Research Center, The University of Tokyo. We will bring together excellent RISC-V-related technologies and products, as well as key people and engineers, and provide business opportunities such as increasing product awareness, realizing collaboration between companies, technology exchange, and information gathering. We look forward to your participation on this occasion! A video of the presentation and information on materials will be posted on the website at a later date.