yōkai

thumb|A print by Kawanabe Kyōsai

are a class of supernatural entities and spirits in Japanese folklore. Yōkai are a vast range of beings, including shapeshifters, ghosts, demons, and tricksters. They can be mischievous, helpful, or malevolent, often appearing as animal-like figures, possessed objects, or humanoids. They embody the mysterious and uncanny aspects of nature and human emotions.