Microsoft Japan Co., Ltd. is a Japanese subsidiary of Microsoft headquartered in Minato, Tokyo. It develops both hardware and software technologies for consumers and business partners.

ASCII Corporation, Ltd. was a Japanese publishing company based in Chiyoda, Tokyo. It became a subsidiary of Kadokawa Group Holdings in 2004, and merged with another Kadokawa subsidiary MediaWorks on April 1, 2008, becoming ASCII Media Works. The company published Monthly ASCII as the main publication. ASCII is best known for creating the Derby Stallion video game series, the MSX computer, and the RPG Maker line of programming software.