Become
When a drunkard holds a sword it becomes something else. The drunkard doesn't become a swordsman, they're still just a drunkard. But the sword in their hands does.
Picture the drunkard standing in front of you. He picked up the sword and is holding it above his head. It's becoming... becoming...
せい
な
None
The sword has become a saber (せい)! It's just like the saber you have! Hey, wait.
If a sword becomes a saber in the hands of a drunkard... then what are you? Geez this became pretty deep. You slice down the drunkard with your saber and become a little more depressed than you were before.