LK&MT

Different hilts.

Originally, the idea was to create a cutting edge using a strand of plasma arcs along the edge of the sword scroll. However, that seemed sort of overkill as fencing is more about pure finesse, finding the cracks in your opponent's armor and striking them precisely, rather than slicing someone in half with a viking broadsword.

The finished concept instead used a coil of metal similar to nichrome, the stuff that toasts your bread in the morning, glowing hot enough (about 1400 degrees Celcius) to cause serious cauterized scars, or even death.

And there we are: the rapier in action.