A yokai illustrated by Edo-period artist Toriyama Sekien in Konjaku Hyakki Shūi. It is said to spy on human affairs from behind a folding screen (byōbu), peeking even over a seven-shaku-tall screen. Some regard it as a visual invention drawing on Chinese classical anecdotes, while others interpret it as a tsukumogami—an aged screen that transformed after long years of witnessing bedroom secrets. It lacks strong place-based lore, with its identity largely defined by pictorial sources.