Kuina Shimotsuki is a supporting character in the anime and manga series One Piece. She is the childhood friend and rival of Roronoa Zoro at the Isshin Dojo, where they both trained in swordsmanship. Gifted with exceptional skills, Kuina consistently outperformed Zoro in their duels. Despite her talent, she struggled with the belief that women could not surpass men as swordsmen. Her untimely death profoundly impacted Zoro, inspiring him to fulfill their shared dream of becoming the world's greatest swordsman in her memory.