Man with knife on rooftop

A muscular nude figure crouches on a tiled rooftop, seen from behind with head turned in profile, gripping a knife in his right hand; his hair is tied up, and stylized cloud- or flame-like scrollwork in black ink swirls around a round tiled ridge behind him. The composition is rendered in ink with pale wash on paper, limited to grey-black tones against the cream ground, with a blank vertical panel and a seal or signature at lower right reserved for text. Tsukioka Yoshitoshi, 1860, preparatory drawing for a print.