Kuroto Nakano is just like your typical hardworking member of society and has been overworked to the point of exhaustion. Although he lives alone, he must deal with the burdens to sustain his rather bleak living style. Even though he has been carrying this stress and depression associated with work, he doesn't realize that its taking on a form of darkness, a darkness that resides within a person's body and will eventually bring his life to ruin. Fox deities can see the darkness and have the duty to save people before it's to late. To help rid Kuroto of his stress, Senko-san who is over eight hundred years old, and a fox girl, volunteers to take care of him, and will do anything she can to ease the tension in his weary soul.