In One Piece, Uta is a central character in the film One Piece Film: Red, which is canon-adjacent (meaning it ties into the main story but isn't part of the manga's core plot).
Uta is the adoptive daughter of Shanks, the captain of the Red-Haired Pirates and a major figure in Luffy's life. She is also a world-famous singer with the power of the Uta Uta no Mi (Song-Song Fruit), which allows her to transport people into a dreamlike world called "Uta World" through her singing.
Uta organizes a concert on Elegia, inviting the Straw Hat Pirates and others. However, her true goal is to trap everyone in Uta World forever, believing it to be a perfect, peaceful reality. This stems from her desire to create a world without piracy, as she blames pirates for the suffering in the real world.
Uta's powers come with a dangerous drawback—using them excessively harms her physically. Despite this, she continues to sing, putting her life at risk. Luffy and Shanks try to stop her, as her plan would trap countless innocent people in Uta World forever.
In the end, Uta realizes the error of her ways and sacrifices herself to save everyone. She uses her powers one last time to return everyone to the real world, but the strain proves fatal. Uta dies peacefully, surrounded by Luffy and Shanks, and her spirit is seen singing in the sky as a tribute to her legacy.
Uta's story is tragic and emotional, highlighting themes of sacrifice, family, and the consequences of one's actions. While
her story is primarily tied to Film: Red, her character has left a lasting impact on fans of One Piece.