Karasu Tengu is a mythical creature from Japanese folklore, often depicted as a bird-like humanoid. It is characterized by its black feathers, long beak, and the ability to fly. Traditionally, Karasu Tengu is considered a protector of the mountains and forests, embodying both benevolence and mischief. In Japanese culture, Karasu Tengu is associated with martial arts and is believed to possess great wisdom. It is often portrayed as a teacher to skilled warriors, guiding them in their training. The creature is a part of the broader Tengu mythology, which includes various other forms of these supernatural beings.