Transmigration: Becoming the Strongest Celestial Dragon

【One Piece World + Celestial Dragon from the Start + Righteous Path】 After transmigrating to the One Piece world, he becomes a direct descendant of the Cassilia royal family, one of the nineteen royal lineages. A Celestial Dragon who stands at the pinnacle of the world from birth, he starts with an SSS-rank advantage. But as a villain who opposes the fated protagonist, King Luffy, Saint Bacar has no choice but to step onto the path to invincibility, one step at a time! Only when he finally stops does he realize that he already rules over Mary Geoise!