What is one piece kuina?

Kuina is a fictional character from the Japanese manga series 'One Piece' by Eiichiro Oda. She was introduced early in the series as the daughter of a sword instructor, who wished to become the greatest swordsman in the world, despite the difficulties associated with being a woman in a male-dominated profession. Kuina was a skilled swordsman who trained alongside the protagonist, Monkey D. Luffy, as a child. However, she tragically fell down the stairs and died, leaving Luffy feeling guilty and determined to become the greatest swordsman in her memory. Despite her short life, Kuina has had a significant impact on the series, inspiring Luffy's quest and challenging gender stereotypes in the world of One Piece.