The Nakajima Ki-116 was a late-World War II aircraft developed for the Imperial Japanese Army Air Force.
It was originally the fourth Mansyu-built Ki-84-I, adapted to take a 1,100 kW (1,500 hp) Mitsubishi Ha-112-II (aka Kinsei 62) engine, the same engine used in the Kawasaki Ki-100, driving a three-blade propeller borrowed from a Mitsubishi Ki-46-III Dinah.
This conversion proved to be very successful, a reduction of 450 kg (1,000 lb) in empty weight being registered.
[1][2][3] It appeared somewhat longer and had an increased tail surface area compared to the original Ki-84.
One aircraft was built at Manshūkoku Hikōki Seizo KK at their plant in Harbin in 1945.