The Ki-49-IIa was a Japanese medium bomber developed in late 1930s. The development of the Ki-49 began after experience from combat with Ki-21 showed that the bomber would be unable to conduct daylight bombing missions unescorted. To remedy this issue, heavy defensive armament as well as armour was installed. The Ki-49-IIa featured more powerful Ha-109 engines as opposed to the Ha-41 engines used previously, self-sealing fuel tanks, and an improved armour scheme.

The Ki-49-IIa has been in the game since the start of the Open Beta Test prior to Update 1.27. The Ki-49's role is a low-altitude medium bomber capable of destroying ground targets such as pillboxes and tanks. Although hindered by a low total bomb capacity, this aircraft is renowned for its impressive manoeuvrability. The defensive armament coupled with the armour also makes repelling attackers easier, especially with the dorsal 20 mm cannon.