The Japanese Army Technical Headquarters wanted a tank that could attack field fortifications, and still be mobile by road. The main gun was to be a 57 mm with a machine gun mounted pointing to the rear and one facing forward. The armor was to be strong enough to defend against 37 mm antitank guns. The proposed tank had to be transportable by railway.
Design work started in June 1925.
For being the first Japanese designed tank it was quite a success compared to the other tanks available from other countries at the time.