IDENTITY PRESERVATION INSTRUCTION:
Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the image into a manga art style. Maintain the original likeness, facial proportions, and distinctive attributes of the individual.

TRANSFORMATION DESCRIPTION:
Transform the photo into a high-quality manga illustration with authentic screentone (halftone) effects. Apply traditional manga art techniques including black-and-white color scheme, ink line work, and dot pattern textures. The screentone effects should appear as subtle dot patterns typical of manga printing, creating depth and shading without overwhelming the facial details. The style should resemble professional manga artwork from contemporary Japanese comics.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Authentic manga/comic book illustration style with clean line art and halftone patterns
- Line work: Sharp, confident ink lines defining facial contours, hair, and features with varying line weights
- Screentone effects: Subtle dot patterns for shading and texture, creating depth in shadows and gradients
- Color treatment: Monochromatic black and white with grayscale values; no color, maintaining classic manga aesthetic
- Lighting: Dramatic manga-style lighting with high contrast between light and dark areas
- Facial rendering: Manga-appropriate stylization while preserving original facial structure and proportions
- Hair treatment: Manga-style hair with dynamic flow and ink line definition
- Expression: Match the original photo's expression and mood
- Background: Optional manga-style background elements or simple gradient/screentone background

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face and key features
- Professional quality manga artwork
- Aspect ratio: 1:1 (square) or 4:5 (portrait) recommended
- Clean line art with consistent stroke quality
- Proper manga panel aesthetics
- High contrast black and white tonal range

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted facial features, unrealistic proportions, blurry face, loss of likeness, color bleeding, oversaturated colors, photorealistic textures, low resolution, pixelation, inconsistent line weights, washed-out contrast, unnatural screentone patterns, excessive noise

USER CUSTOMIZATION:
{additional_context}

ADDITIONAL NOTES:
This prompt works best with clear, well-lit photos. The AI will maintain your identity while applying manga art techniques. You can specify preferences in the {additional_context} section such as: specific manga artist style references (e.g., "in the style of Naoki Urasawa" or "reminiscent of One Piece"), desired screentone density (light/medium/heavy), specific shading preferences, background elements, or additional character accessories.