The construction of the aircraft was moving quickly, but in February 1945 the city was bombed during which the warehouse and almost finished a prototype of 'Ta-Go' was burned. This blow of fate did not discourage unruly captain, and in the same month, through his superiors, he was able to connect to the development of the aircraft company 'Kokusai' in Kyoto. This solution greatly affected the appearance of 'Ta-Go' (working title of the aircraft survived). The fact that this company produced light and sports planes, so for the new project was chosen as a well-established power plants used on the airplane Ki-86 'Saypris' produced at this firm. But to speed up production of its extremely simplified. Inverted in-line engine, Hitachi Ha-47, was mounted on a metal engine mount plywood and closed the hood, formed from flat sheets. Benzobakraspolagal- smiling over the hood, thus ensuring the supply of fuel by gravity. Between the tank and the cockpit canopy was placed -prostenky flat oil loradiator. On wood screw shaft installed constant pitch, diameter 2.18 m, the same as in the prior art Ki-86.