As of my knowledge cutoff in September 2021, Roronoa Zoro, one of the main characters in the One Piece series, acquired the legendary sword Shusui during the events in the Thriller Bark arc. Since then, he has continued to use Shusui as one of his primary swords.

Zoro is known for his exceptional swordsmanship skills and his ambition to become the world's greatest swordsman. With Shusui in his possession, he incorporates it into his fighting style, utilizing its exceptional cutting power and strength to enhance his combat abilities.

Shusui has become an integral part of Zoro's arsenal, along with his other swords, as he continues his journey with the Straw Hat Pirates. Zoro seeks to further hone his skills and overcome powerful opponents on his path to achieve his goal.