Kawasaki Ki-10, Ki-32, Ki-45, Ki-88 and Ki-91

The Kawasaki Ki-10 'Perry' was the best biplane fighter to serve with the Imperial Japanese Army, and was a highly manoeuvrable aircraft that had a big influence on the design of later monoplane fighters
The Kawasaki Ki-32 'Mary' was a single-engined light bomber slightly superior to the contemporary Fairey Battle, and that benefited greatly from operating against limited aerial opposition over China during the second Sino-Japanese War
The Kawasaki Ki-45 Toryu (Dragon Slayer) was originally designed as a twin-engined heavy fighter in the same class as the Messerschmitt Bf-110, but saw most service as a ground-attack aircraft and night fighter
The Kawasaki Ki-88 was a design for a fighter aircraft inspired by the Bell P-39 Airacobra, with the engine mounted behind the cockpit
The designation Kawasaki Ki-91 was given to a design for a four-engined heavy bomber under development in Japan between 1943 and 1945