Hachiroku is a main character in the visual novel 'Maitetsu.' She is a Rail Lord, a humanoid representation of a steam locomotive, specifically the 8620 model. Hachiroku is awakened by the protagonist, Sotetsu, as he seeks to revive the railway system in his town to prevent a water pollution project. She is characterized by her calm and composed demeanor, often displaying curiosity about human behavior and emotions. Throughout the series, Hachiroku plays a critical role in helping Sotetsu navigate the challenges of revitalizing the railway, while also exploring her own identity and purpose as a Rail Lord.