Create an unfinished rough black-and-white ink sketch of a minimalist yet detailed cyberpunk character. The linework should be bold, thick, and expressive. The character should have realistic human proportions, featuring a boyish, medium-length haircut, cat ears, an upturned nose, and a round, human face. He is a lone traveler, and his mechanical arm rests in a harness, showing the blend of human and machine. His gear is a mix of tech-infused fabrics and rugged, worn layers, with strong, expressive outlines. The background should reflect a gritty, industrial metropolis with towering, abstract, jagged structures. Neon signs and rain-slicked surfaces should be hinted at with thick intersecting shapes. The overall mood of the cityscape should feel dense and alive, with unfinished contours that suggest movement, as if the world itself is shifting and evolving around him.