Rise of the Nakamura
A huge hybrid weapon wielded by Hojo Ujiyasu. Physically, it resembles a nondescript lump of iron on the end of a hilt, similar to a large mace, but with various parts covered in spots of complex machinery. An opening at the end of the mace belies its other method of attack.
The weapon appears to use the wielder’s Ki energy as a power source, and has been shown to have enough range to barrage an invading army from the safety of a castle. A combined hit with the user slamming the mace into an opponent then firing the cannon at point blank would be devastating to almost any type of enemy.