I was rummaging around my older pieces, some that never made it here and I saw a sword design I made that I kind of liked and it reminded me of an unofficial Headcanon that will most likely never make it to the drawing board about it.

Lupin has minor electrokinesis abilities but due to the volatile nature of it, she doesn't necessarily enjoy the fifty-fifty chance of having a rebound hitting her. The sword was supposed to act as a grounding agent to help control and nullify those chances of rebounding. It also was supposed to double the power of her hits. But again, this is something that will most likely never hit the actual drawing board to her character or weapons, but it was fun to draw up again. :D

Reference was used from over yonder: http://senshistock.deviantart.com/art/Sailor-Sakky-with-Sword-16-141684964

Art and Lupin belong to me~
Reference stock belongs to Senshi Stock on DA