During the Heian Era, the story of Japan's number one onmyoji, Abe Seimei, and Minamoto Boya, the first prince of Prince Katsume and the grandson of Emperor Daigo. The two met in their youth, and later got to know each other, cherish each other, and promised each other. What kind of bond would there be between them? Let's take a look at the wonderful story between Japan's No. 1 Onmyoji and the "God of Gagaku"~! The story is purely fictitious~~~