The rules are cryptic and incomplete concerning katanas, and
their relationship to light/laser swords, etc. To wit:
The character sheet lists Katana as a skill, and there are references to it as
such in the combat section. In the equipment list for LightSword there is a
reference to how only a katana/10 adept can use it to it's full potential. But
what that potential actually does is also cryptic. There is no Katana skill
listed in the skills section of book 1.
So, here is how this will work out for us:
Katana skill
10 levels
Cost: 1SP or 5 weeks study/level
Pre-requisites: Dex, Agility, Con
Max Expertise: 1/4(Dex+Agil)+1
Laser/LightSword skill remains the same, but with one slight
change. To raise skill to 11 or 12, one must be a Katana/10 adept. Lower
levels of skill, to 10, have no Pre-Requisite skill, but that last little bit
takes a lot of effort.