The Mitsubishi Q2M "Tai'yō" (大洋, Great Sea) design was derived from the Mitsubishi Ki-67-I Hiryū ("Peggy") heavy/torpedo bomber of the Japanese Army and its Naval variant, "Yasukuni".

It was ordered for design and construction in the last stages of war.

Powerful engines of 1,353 kW (1,840 hp) would have been used to drive five-blade propellers.

Due to technical troubles and a long development of the theoretical design, this aircraft did not advance from paper plans in last days of conflict.

Data from [1]General characteristics Performance Armament Avionics