One Piece: The Crownless Family

Enslaved at nine, he entered the Holy Land. At seventeen, he crawled out alive. The day Lucien returned to South Sea Bell Island, he brought no knife or gun, only a body that could not be broken. Talent: "Heartsteel." Anyone who opposes him and isn't far weaker than he is gives him all the life potential they possess. The stronger his opponents, the stronger he becomes. No Devil Fruits, no swords. With nothing but his fists, he fought his way from black-market gambling dens to the underworld, then from the Grand Line all the way to the self-proclaimed "gods" of the Holy Land of Mary Geoise. The Crownless Family has six seats open for its officers: Professor, Chef, Mute, Grin, Nightingale, and Priest. This world has never lacked people wearing crowns. What it lacks is a family willing to rip those crowns out by the roots. Make an enemy of me, and you feed me. A slave at nine, turning the tables at seventeen.