zhishiwan, original, 1boy, arm up, backlighting, bags under eyes, blue eyes, butterfly wings, collared shirt, exhausted, expressionless, eye reflection, hair over one eye, high collar, insect wings, limited color, lonely, long sleeves, looking at viewer, male focus, medium hair, messy hair, monochrome, parted lips, portrait, reference sheet, reflection, ribs, shirt, sketch (medium), skinny, soft blending, upper body, veil, vignetting, wavy hair, white sleeves, wings