The V6 starfighter was designed in YE 30 and first manufactured and deployed by the Star Army of Yamatai in YE 31. Its nickname was the Hayabusa (隼, “Peregrine Falcon”). By YE 32, the “B” model had been replaced by later Ke-V6-1C and Ke-V6-1D models.
The V6's original design (Nicknamed “V6A Arrowhead”) featured twin, fixed forward cannons, but Star Army soldiers felt these were insufficient and the guns were replaced with four dual turrets controlled by both the pilot and a fire control system. Other early improvements included moving the rear wheels off the field projector to improve efficiency.