Shusui, One Piece Wiki

Shusui is one of the 21 Great Grade swords and a "Black Blade" (黒刀, Kokutō?) that was once wielded by the legendary samurai Shimotsuki Ryuma. It is prized as the national treasure of the Wano Country. After his death, the katana was buried with Ryuma, until his grave was robbed by Gecko Moria 23 years ago. Ryuma appeared as a zombie on Thriller Bark, who had been given Brook's shadow. After his defeat, Ryuma bequeathed the sword to Roronoa Zoro, and said he was satisfied with Zoro as the sword's

One Piece Wiki - CHAPTER 952 ANALYSIS

Roronoa Zoro - Wiki

Shusui, One Piece Wiki

Shusui, One Piece Wiki

One Piece: What is a Black Blade, explained

Three Sword Style/One Sword Style, One Piece Wiki

Shusui, One Piece Wiki

Meitou Shuusui, Wiki

Samurai, One Piece Wiki

Tsuji Shibai, One Piece Wiki

Equipment: Meitō - Shusui Wiki RPG The Omniverse - Another

Swordsman, One Piece Wiki

One Piece: What is a Black Blade, explained