The P1Y Ginga was intended to be a multirole military aircraft along the same lines as the Mosquito and Ju 88. It has much promise but the war ended before its full potential was realized.
The P1Y was to meet an Imperial Japanese Navy 15-Shi requirement issued in 1940. It was to be a low level bomber, torpedo bomber, and dive bomber. It was designed by Dai-Ichi Kaigun Koku Gijitsusho starting in 1940 with Tadanao Mitsuzi and Masao Yamana leading the design effort.
The pilot was protected by 20 mm of armor behind his head.