A young female warrior in futuristic, intricately designed samurai armor stands confidently, wielding a sleek saber. The scene is styled like a cinematic movie poster, with vibrant anime and manga-inspired graphics. In the backdrop, ancient mech ruins loom large, and colorful flags flutter gracefully in the sun-drenched sky. The atmosphere exudes a happy and adventurous spirit, emphasized by natural lighting and an array of bright colors. The poster is rendered in high detail with offset printing, suitable for an 8K HD display, encapsulating an epic blend of tradition and futurism.