A kid who lost the one thing that made him special gets handed a reason to keep fighting anyway. Masahiro and Mokkun build something real together, one impossible demon at a time, and the show earns every laugh and every gut punch by refusing to choose between them. The supernatural theming runs deep enough to satisfy mythology obsessives, the pacing keeps you guessing, and the cliffhanger ending proves it knew exactly what story it was telling, even if it never got to finish it.

Masahiro is the grandson of the great onmyouji Abe no Seimei, who has passed his teachings down to him. But Masahiro has lost the second sight that lets an onmyouji see supernatural beings, an ability central to the craft, and he feels he has little choice but to look for another career. Then a strange mononoke appears, and Masahiro names it Mokkun. After a fight with a demon, Mokkun shows him the true powers he has within him. With Mokkun's help, Masahiro sets out to become the greatest onmyouji of all, though the question of what Mokkun really is remains. The story is a supernatural action fantasy adapted from a novel by Yuuki Mitsuru.