One Piece: Black Feather, Scarlet Sea

In the world of One Piece, a young woman from our world dies and is reincarnated into the body of Nico Raven, the secret twin sister of Nico Robin—brilliant, sharp-tongued, and emotionally guarded. Raven had read everything in the Ohara library, rivaling even Clover in historical knowledge, including secrets forbidden by the World Government.



Separated from her sister after they escaped to an island after the Buster Call. Raven gets captured by slave traders and sold to the Celestial Dragons.



Years of torture, experiments, and psychological torment follow. Raven is force-fed the Mythical Zoan Devil Fruit: Tori Tori no Mi, Model: Morrígan, which allows her to transform into a raven-winged goddess of war and prophecy—fitting for one once full of knowledge and now brimming with fury. In the shadows of Mary Geoise, she meets Boa Hancock and her sisters, and the bond they forge is born not of affection, but shared suffering.



When Fisher Tiger launches his infamous rampage through Mary Geoise, Raven helps coordinate their escape with chilling precision. Alongside the Kuja sisters, she escapes to Amazon Lily, aided in secrecy by Silvers Rayleigh, Shakuyaku, and Elder Gloriosa.



There, Raven trains, heals, and learns the Haki arts, mastering Observation and Armament, while awakening a terrifyingly seductive version of Conqueror’s Haki—a power that reflects her unyielding will and the sensual magnetism of her reborn soul. Despite her stoicism, Kuja women begin to gravitate toward her. Even Boa Hancock, prideful and still healing, begins to struggle with unexpected emotions toward Raven.



But Raven isn’t one to stay docked for long. With Gloriosa's blessing and Hancock’s reluctant but silent approval, she sets sail with an all-female crew, each member smitten by her intellect, charm, or sheer dominance. Her ship, the Obsidian Morrígan, becomes the terror of the seas and a sanctuary for women who refuse to bow.