The Saber is a sword that can be dropped from the Expert Swordsman boss that spawns every 3-4 hours in First Sea, located in the middle of the Stone Arena. This island is found past Rocks Island and Marineford (War Island). In order to obtain this sword, you must deal about 40K-50K damage to the boss. Then, after he dies, he has a 15% chance drop of this sword, along with 2.5M EXP and 300K Beli.