sharp clean lineart, thin but defined lines, crisp edges, flat color base, cel shading, hard shadows, high contrast shading, limited color palette, bold color blocking, strong color contrast, high detail eyes, complex highlights, clean composition, strong, detailed eyes, bishounen, half-closed eyes, vivid color, simple shading, Cell shading, masterpiece, high quality, beautiful face, ordinary high school boy, average-looking face, plain appearance, black short hair, sleepy eyes, unremarkable features, realistic proportions, everyday student, classroom, school uniform, cardigan