During the Heian period, Seimei Abe trains in magic but lacks interest, until a collaboration with Hiromasa Minamoto arises to solve a strange phenomenon.

Set in the Heian period, Seimei Abe is a young student at Onmyoryo. The school raises students to become an onmyoji, who protect the city from curses and evil spirits. Seimei is well known as a genius in the field of magic. Unlike his fellow students, who all aspire to become an onmyoji, Seimei doesn't any interest in becoming an onmyoji. One day, he is asked by Noble Hiromasa Minamoto to solve a strange phenomenon that hits royal family member Yoshiko. Seimei and Hiromasa work together to unravel the strange phenomenon.