i'm a martial artist so i thought i'd try the blue zenith tachi i found. I equipped it and for a few minutes it worked like it was supposed to. You do sword and fist attack. However, after a few minutes i was only doing sword attack, which is considerably lower than my fist attack. Then when i unequipped the sword, i couldn't attack at all...just stood there taking damage. The bug doesn't clear until you die, or /terminate. Then you can use your fists again.