Joine was just another high school student-broke, exhausted, and barely scraping by. His only goal? Survive each day and take care of his little sister, Mina. But everything changes when he stumbles upon Lumi, a mysterious and mischievous Fu Ju fox from an ancient tribe.

One accidental contract later, Joine finds himself bound to Lumi, unlocking strange new powers and getting dragged into a world of supernatural battles, hidden factions, and dangerous enemies lurking in the shadows.

As if his life wasn't already chaotic enough, now he has to juggle school, combat training, and a growing list of girls who seem way too interested in him.

With a mischievous fox spirit at his side and powerful foes closing in, Joine's once normal life is over. But hey, at least he's not broke anymore... right?