Japanese folklore is filled with spirits and mythical creatures, and one of the most well-known beings is the tengu. Tengu are an important part of Shinto and Buddhism and form part of the yokai. While they have been seen as demons, the importance of tengu have changed over time. Many people wear tengu masks and the image has been woven into popular culture. The Culture Tome is looking into the history of the tengu to see what they are and their significance to Japanese culture.