The Ki-43-III otsu is a Japanese fighter. It was introduced in Update 1.45 "Steel Generals".

The Ki-43-III otsu is as a rank three aircraft in the Japanese Army Air Service line. Like its rank two brethren, it is an extremely manoeuvrable and lightweight aircraft. It has exceptional climb and roll rate making it a fairly hard target to hit in the hands of a skilled player. The trade-off, however, is its extremely fragile nature - a good hit even from a plane equipped with rifle-calibre guns could do some serious damage if one doesn't push the plane to its limits in any of the game modes. On the other hand, the rather modest pair of fuselage-mounted 12.7 mm Ho-103s of the Ki-43-II have been replaced with a pair of the hard-hitting Ho-5 20 mm cannons, which for its battle-rating gives the Hayabusa the power it needs to take down anything it opposes. Like many of the Japanese fighters, dogfighting is the key to staying alive. By using the combat flaps and throttle in a optimal manner, this aircraft can get behind nearly every opponent it meets in a low to mid altitude dogfight. With a modest ammo load of 300 rounds, trigger discipline is important here. It is best to get up close (200-500 m is optimal) and then let off several short bursts, firing until the enemy is critically damaged or the plane is destroyed.