This is an era of prosperous science and technology.
But there are still constant incidents of strange power and chaos.
There is a group of people who have kept secrets for thousands of years and performed their duties as gods and ghosts.
In ancient times, they were called Onmyoji.
This is a story about two young onmyojis. In addition to their daily college life, they slay demons and deal with changes. There is also an onmyoji from Japan. When the monsters in "The Book of Mountains and Seas" and "The Story of the Past" appear in front of them, no one knows what ending awaits them in the end.