The Uwan is a yokai of uncertain identity found in Edo-period yokai art. In works like Sawaki Suushi’s Hyakkai Zukan and Toriyama Sekien’s Gazu Hyakki Yagyō, it appears as a humanlike figure with blackened teeth, both hands raised, startling people with its voice. With no attached notes, its origins are unknown, but backgrounds of estate walls or ruined houses suggest it haunts residences. Some point to its three-fingered hands as hinting at demonic nature, though this is not established.