1boy, realistic facial features, detailed features, well-defined features, semi-realistic style, painted style, solo, minimalism, handsome face, adult male style, short hair, beautiful eyes, muted soft colors, sketchy details, sharp lineart, subtle shading, expressive eyes, genkiheiki style, drawing style, sketchy lines, colored sketch, teacher, white shirt, cardigan, slight smirk, eyes not smiling, black hair, indoors, lived-in room, dim atmosphere
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