Nyan Tan is a minor fictional character from the anime series 'Subarashiki Kono Sekai' (also known as 'The World Ends with You'). Nyan Tan is depicted as a playful, cat-like figure often providing comic relief within the story. Known for their quirky demeanor, Nyan Tan interacts with main characters in a lighthearted manner, offering wisdom and support at crucial moments. Their presence helps to ease tense situations and adds charm to the narrative, making them a fan-favorite among viewers.