In Fox Girls Never Play Dirty, it is the mid-20th century, and Ryunosuke, uncertain about his future after graduating from university, realizes he needs a significant change. Choosing to take a prolonged break, he journeys to Stivale, a country nestled in the boot-shaped region of Europe, seeking a new direction in life. Upon arrival, he meets Serena, a warrior adorned with fox ears, who is resolute in her mission to eradicate the corruption that has plagued her country since the conclusion of the Great War. Together, they must gather allies to thwart the chancellor’s reckless policies.