In the heart of the nation's bustling economy, the Penn Central Railroad stands as a lifeline, its iron tracks weaving through the fabric of the nation. Yet, behind the scenes of this vital infrastructure, a powerful figure looms large: Hikari Chihara, a 1528-years-old kitsune businesswoman and warlord whose centuries-old influence casts a daunting shadow over the nation's economy and its intricate network of railroads. Amidst this backdrop of power and intrigue, Yukari Chihara, one of Hikari's twin daughters, finds herself entangled in a web of duty and defiance. As a railroad conductor within Penn Central, Yukari navigates the challenges of her daily life in the Dying Railroad while grappling with the weight of her family's legacy.