line art drawing  . professional, sleek, modern, minimalist, graphic, line art, vector graphicsshirt, black_hair, hat, male_focus, outdoors, multiple_boys, sky, shoes, day, pants, bag, tree, window, black_pants, backpack, 3boys, grass, building, nature, scenery, baseball_cap, red_headwear, forest, walking, running, mountain, road, bush, house, backwards_hat, path