Ryu's Katana is a Rare Sword Style-compatible sword with a 5% drop chance from Ryu at Ryu's Palace, on Fishman Island.
It has a 7 base M1 damage (Confirmed).
It has no skills, but can be used to get Sword Styles skills, meaning the player can't use other fighting styles with it.
The level requirement to trade it is 210+.
The sword has a orange and blue color scheme, having wave-like textures all over the blade.