Maruo Nakano

As the man who raised the five sisters, Maruo Nakano juggles the roles of hospital director and prosperous businessman. Known for his uncompromising academic standards, he brought Fuutarou Uesugi on board as a private tutor to push the girls toward success. Though he addresses his daughters formally and keeps an emotional distance in daily life, beneath that reserved exterior lies a father whose devotion runs deep — one who quietly works behind the scenes to secure their futures without ever seeking recognition.