少年陰陽師 翼よいま、天へ還れ

The protagonist of the series, which is set in the Heian era, is Abe no Masahiro, the grandson of the great onmyōji, Abe no Seimei, who passed his teachings on to his grandson. Unfortunately, Masahiro has lost his sixth sense and with it the ability to see spirits. Masahiro constantly feels overshadowed by his grandfather's fame.

One day, Masahiro meets a fox-like creature which he names Mokkun who shows him his true potential powers after fighting a demon. Mokkun is actually Tōda, who prefers to be called Guren. He is one of the twelve shikigami called the Shinshō who has pledged his loyalty to Seimei and is helping Masahiro to surpass his grandfather.