"Legends say that Senzou the Black Fox is one of the most vicious and powerful supernatural beasts to ever roam the land. At least, he used to be. Now, 300 years after he was imprisoned by the Sun Goddess for his bad behavior, Senzou is back -- in the form of a small black fox with no powers! Tasked with protecting a young tanuki called Manpachi as he fulfills various tasks for the gods, Senzou must earn his powers back by learning how to be a good...

It is said that there are some special animals occasionally born with great powers. Senzou the black fox is one of those... but instead of using his powers for good, he abused his strength until the Sun Goddess imprisoned him for his bad behavior.

Three hundred years later, he's finally been released, but only on one condition — he can't have any of his abilities back until he successfully helps a tanuki cub named Manpachi become an assistant

...

"Just when everything seems like smooth sailing for Senzou and Manpachi, trouble arrives on their doorstep. The ancient stone of destruction starts oozing miasma and as it does, some of Senzou's deeply buried past memories start to rise up -- memories of 'another' Manpachi who seems to have been Senzou's first companion"--p. [4] of cover.

After 300 years, the gods that imprisoned Senzou the black fox for his arrogance finally set him free. There is only one condition — he can't have any of his supernatural abilities back until he successfully helps a tanuki pup named Manpachi become one of their magical assistants. Unfortunately for Senzou, there's no cheating when it comes to completing his task! The magic beads around his neck make sure he can't wander too far from his charge or...