What is a teacher of Yin and Yang?

Yin-Yang teacher, originated in China, is widely popular in Japan, and has formed a unique part of Japanese Shinto-"Yin-Yang Road". A master of yin and yang is a fortune teller or illusionist. Not only do they know how to look at the stars and face each other, but they can also measure directions, know disasters, draw spells and perform illusions. People also realize that invisible forces, such as fate, soul and ghost, have the ability to dominate these things.