10-year-old Yonatan, curly brown hair, curious eyes, confident yet humble expression, solving a complex math problem on blackboard, surrounded by amazed classmates, comic book style, cel shading, bold outlines, dynamic composition, vibrant blues and yellows, bright classroom lighting, micro-expressions, enthusiastic gestures, average build, classroom filled with mathematical symbols and formulas --seed 1234 --stylize 1000 --niji 5