Chainsaw

A newly created weapon by a shinobi of Amegakure, Onizuki. It's a new design of tool/weapon that is turned on when the clutch is engaged, and a chain that revolves a guide bar, which is attached to the frame, will begin to move. This same chain has razor-sharp blades on it, making it quite the tool and even a weapon in some situations. It is able to be modified to the user's content, so long as the person is careful with the modifications and always tests it before using it on something. It's a brand new design so it's most likely unstable and easy to backfire or fail to work.

The design that Onizuki made was for himself personally. It's a weapon for him, and is engaged by pulling the clutch and it is fueled by chakra. He is making different models of it to see which one suits him best, or to create one that is truly durable and stable. He made it so that his current model is able to cleanly cut through the blade of a basic sword on the chains highest speed.