Shusui is yet another one of the 21 Great Grade Swords to fall into Zoro's possession in One Piece. The blade once belonged to Ryuma, the legendary samurai of Wano, and is regarded as a national ...

The legendary blade, another Great Grade Sword, belonged to the famed samurai Shimotsuki Ryuma, and his zombie did not want to part with it. Zoro ultimately proved himself by defeating Ryuma ...

But what fans may not know is that it's also a reference to Ryuma and his prequel that Oda wrote long before One Piece. King of Hell Three Sword Style Explained ...