Bản Nghiên Cứu Dáng Người Mực Đen

A [clean sketchbook page] filled with multiple black ink [human silhouette gesture drawings] arranged on a plain white background. Various anonymous figures are shown in diverse poses: standing, walking, sitting, kneeling, leaning, and making expressive arm gestures. Illustrated with rough black marker linework, loose hand-drawn outlines, scribbled interior shading, minimal facial detail, and simplified clothing shapes. Quick thumbnail study aesthetic, raw concept art sketch style, high-contrast monochrome ink, clean paper texture.