In YE 28 Taisho Motoyoshi Katsuko designed several starships for Ketsurui Fleet Yards. While KFY provided a more than adequate outlet for her designs she desired to have a corporate identity expressive of the views of her family and the Fifth Expeditionary Fleet. One year later, in YE 29, her desire became reality when her closest friend, Koyanagi Mayumi expressed interest in retiring from the Star Army of Yamatai to pursue corporate interests of the Motoyoshi Bakufu.
NovaCorp an already existing company expressed interest in expansion and though negotiations with the Motoyoshi Bakufu took Koyanagi Mayumi on as a Director after she retired from the military. Later in that same year Motoyoshi Fleet Yards was named as an official subsidiary of NovaCorp and setup shop in the Yugumo Cluster.
Motoyoshi Fleet Yards is one of the primary military contractors for the Fifth Expeditionary Fleet and also has began to expand into the civilian and independent markets.