Yo-kai are supernatural creatures from Japanese folklore, often depicted as spirits or demons. They can take various forms, ranging from mischievous to helpful, and are believed to influence human behavior and events. Each Yo-kai has its own unique characteristics and stories, making them a diverse part of Japanese culture. In modern times, Yo-kai have gained popularity through various media, including video games and animated series like Yo-kai Watch. These portrayals often focus on the adventures of humans interacting with Yo-kai, showcasing their playful nature and the lessons they can teach about life and relationships.