Monkey D. Luffy from One Piece, featuring an X-shaped scar on his chest and wearing his iconic Straw Hat. The portrait showcases a symmetrical body with dynamic, cinematic lighting and high contrast. The scene is inspired by character concept art, rendered in ultra-high definition with an 8K resolution, highlighting intricate details and vivid colors. Luffy's expression is determined and adventurous, capturing his essence as a pirate leader. The background subtly reflects the vastness of the ocean, enhancing the adventurous theme inherent to Luffy's story.