Tachyon is an Engine Sword originally owned by Caelum but given to his pupil; Starrk. It is a powerful blade that uses its engine hilt to vibrate the blade itself, enhancing its cutting power while the force of the engine propels the slash of the blade forward.
Tachyon is a unique Sword customized with an Engine Gear Shift attached to the hilt of a large blade. The blade's handle can be twisted to rev up the engine which causes the Blade to vibrate vigourously, allowing it to melt through steel with ease. With the amount of revs used, it power of the blade is increased due to the engines propulsion, which thrusts the blade in a forward slashing position.