Steam Gun

Steam Gun (蒸気銃, Jōki jū) or Steam Cylinder/Tube (蒸気筒, Jōki-zutsu) is a steam weapon commonly used by Bushi to fight off the Kabane and guarantee the safety of the citizens, developed from the same technology as the steam engine. The gun is based on several weapons including paintball gun, carbine musket and Winchester. The front end of the gun is based on the cavalry carbine musket and the end is inspired with a lever-action Winchester.

The Steam Gun is connected to portable boiler to create pressure, known as Backpack Engine (背負い機関, Seoi kikan). It is connected to a pressure gauge, and it releases steam from the exhaust after every shot. The ammunition is based on paintball tac-pod. The tac-pod is inserted upside down into the loading chamber that is connected to the barrel of the gun.

It is unknown at this time who invented the gun.