The Ancient Demon God Bai Linghuang Reincarnated into a High School Student

The ancient demon king "Bai Linghuang" was reincarnated into a body called Bai Cannian, and the powerful Onmyoji clan declined. Can the last Onmyoji Yanjin make the Onmyoji clan glorious again? Tiancheng, a child who had no relatives and grew up in an orphanage, joined the Mysterious Organization and became the so-called "Blood Angel".