The Nakajima Ki-43 Hayabusa was a Japanese fighter aircraft used during World War II. It was designed by Nakajima Aircraft Company and first flew in 1939. Known for its agility and lightweight design, the Ki-43 was primarily employed by the Imperial Japanese Army Air Service. Equipped with a powerful engine and armed with machine guns, the Hayabusa excelled in dogfights. It played a significant role in the early years of the war, particularly in the Pacific theater, where it faced various Allied aircraft. The Ki-43 remained in service until the end of the conflict.