Onmyoji was a mysterious character in the Japanese manga and anime, Onmyoji, who possessed the power of yin and yang. The history of Onmyoji could be traced back to the Tang Dynasty. The background story was that during the Tang Dynasty, an Onmyoji named Shinobu Seimei obtained the ability of Onmyoji through communication with ghosts and gods and established the profession of Onmyoji. In later history, Onmyoji became an important character in Japanese culture, not only appearing in literature, opera, and television dramas, but also in games. Onmyoji usually played the role of communicating with ghosts and gods in the game. They used special Onmyoji skills and cards to obtain powerful Yin-Yang abilities and cooperate with other characters to complete various missions and challenges. Onmyoji held an important position in Japanese culture, representing not only mysterious and supernatural powers, but also wisdom and skill. Onmyoji played an important role in traditional Japanese music, painting, dance, and novels, and were widely praised and studied.