The Katana is the first sword that is possible to obtain in the game. This sword can also be paired with Armament Haki to increase damage.
Obtainment:
It can be purchased at Starter Island from Samu for 2000 Beris
Sword Description:
A simple sword, but incredibly well made.
Tips:
If you do not posses of a Logia type devil fruit you can attack from the distance with the Z move.
The Z move has enough range to hit multiple enemies at the same time.
Changing the sword for any other is recommended.
Trivia
This sword is based on the Wado Ichimonji, which is one of the currents Zoro Swords.
It is the first Sword to be made.
The Z moveset is based on the 36 pound phoenix from Zoro's 1 Sword Style.
The sword is needed to get Dual Katana and Triple Sword.
Is the worst sword in the game, lowest burst damage and DPS.