Mouse Computer will display its "mouse" logo billboard advertisement behind the backstop during the Los Angeles Dodgers vs. Cincinnati Reds games in Major League Baseball (MLB) in September 2026. This will be the third phase of advertising, following placements in June and August, and is scheduled for each game on September 15, September 16, September 17, and September 18. The advertisement display schedule is subject to change, and the broadcast channels include NHKBS, SkyPerfecTV, SPOTV NOW, and Amazon Prime Video.

Mouse Computer is a manufacturer that plans, produces, and sells PCs primarily based on domestic production, and does not operate sales bases or store networks in the United States. Despite this, the reason for choosing MLB Dodgers games is to deliver the "mouse" brand to the many viewers watching the games in Japan. The advertisements placed in June and August reportedly achieved a reach of approximately 10 million people, even just considering exposure in broadcast footage, social media, and videos. This third phase is also positioned as a brand awareness initiative targeting the domestic market.

For this upcoming display, the "mouse" logo is scheduled for the right side of the top of the 6th inning on September 15, the left side of the top of the 5th inning on September 16 and 17, and the left side of the top of the 1st inning on September 18. All times are Japan Standard Time (JST), with the September 18 game being a day game starting at 1:40 AM JST.

This initiative can be described as brand communication that overlays the image of athletes challenging themselves on the world's highest stage with the company's manufacturing philosophy of producing in Japan and delivering to Japanese users. It aims to enhance awareness of the "mouse" brand in the Japanese market and broadly communicate the company's commitment to continuous challenges within Japan.