One might add the Mitsubishi Ha-104 (Ha 42 in the unified system) as it powered the Ki-67. It used the same cylinder bore and stroke as the Kasei but with 18 cylinders.
engine type..................cylinders.........diameter.. ........weight..........displacement
Mitsubishi Ha-104............18.................1372 mm....... ..1140 kg.............54.1L (3301 ci)
More generally, Mitsubishi and Nakajima each produced engines with three cylinder sizes. Typically they produced these in 14 cylinder and 18 cylinder versions, except that Mitsubishi never tried to make an eighteen cylinder engine using the Zusei cylinders. The Mitsubishi engine using 18 Kinsei cylinders was the Ha 43 and it powered the A7M2 Reppu and Ki-83 prototypes but a combination of earthquakes and B-29 raids prevented major production. The Nakajima Ha 44 and Ha 217 used the Ha 41/Ha 109 and the Mamori cylinder sizes respectively but were not used in service.
The take home message is that both companies were designing and testing too many engines. The problem for the Army and Navy was deciding which engines to abandon. With hindsight we can see that the Mitsubishi Zusei always produced slightly less power than the Nakajima Sakae and could have been replaced in all its applications without any cost. We can also see that the Mamori and Ha 217 were never reliable. Had the Navy insisted that the B6N1 used the Kasei, it might have been ready for service in the Guadalcanal Campaign. At the time it was probably harder, especially as Nakajima was a politician and the early Kasei engines didn't have quite the same power for take off.