Nuko is a mysterious, cat-like creature from Shoujo Shuumatsu Ryokou (Girls’ Last Tour) who accompanies Chito and Yuuri on parts of their journey through the ruins of a post-apocalyptic world. Friendly, calm, and enigmatic, Nuko serves as a small but memorable guide-like presence that adds warmth and curiosity to the series. The character’s role is less about driving the plot and more about deepening the atmosphere, highlighting the strange remnants of civilization, and contrasting the girls’ loneliness with a quiet sense of companionship.