Kiko is the Raillord paired with the Hoji 6016 steam railcar, representing the Najiya Railway Hoji 6005 class. Her retro-modern aesthetic features a red, black, and white color scheme mirroring her unit's livery, incorporating Taisho-era fashion elements. Her design includes a cap, hair ribbon, and gloves.

She exhibits strong curiosity and an appreciation for both historical traditions and new developments. As the dedicated operator of Japan's last functioning steam railcar, she runs alongside this unique rolling stock. Steam railcars like Hoji 6016 combine locomotive and passenger carriage functions into a single self-propelled unit, an early innovation preceding modern self-propelled trains, historically deployed on smaller, low-traffic lines as a cost-effective solution.

Her background ties directly to her railcar's technological history. The Hoji 6005 class was manufactured in the 1910s by Kisha Seizo and burned coal for propulsion. Units like Hoji 6016 operated on local passenger lines before being phased out in favor of newer methods. Her foundational role remains intrinsically linked to preserving and operating this historical steam railcar technology within her railway.