Yuuki Mitsuru

The time is Heian, and 13-year-old Masahiro is the grandson of the rare yin-yang master Abe no Seimei. Still only half a man, Masahiro is still training to surpass his grandfather, while being teased by his partner Mokkun, the Mononokai. Then, there is a commotion in the Inner Palace, and Masahiro and Mokkun start their own investigation, but a strange shadow lurks behind the scenes... Can the loser Onmyoji save the capital?

The story centers on the historical figure Abe no Seimei, one of Japan's most famous onmyōji (ancient Japanese occultist). The story of the first book begins when Abe no Seimei inadvertently assists Princess Tachibana during Kyoto's Kamosai festival, and finds out that she is possessed by a formidable spirit.

Erin is a land targeted by the evil god Fior. Cool, a knight in training, and Sei, a sorceress in training, belong to the Ogma Knights and work diligently every day as a pair to defeat monsters. Eventually, their strength is recognized and they are given their first mission, but...? A Celtic action fantasy with a story by Mitsuru Yuki, author of the "Shonen Onmyoji" series.

Abe no Masahiro is the grandson of the great omnyouji Abe no Semei, who passed his teachings on to his grandson. Masahiro lost his sixth sense and the ability to see spirits, but with Mokkun as his guide, he works to become his grandfather's successor.