Some characters may show excitement. They might be excited to see new stories about their world and themselves. For example, Finnick might be really happy to see stories where he plays a more important role than in the movie.
The characters from Zootopia would have various reactions. Judy, being an optimist and always looking for new things, would be fascinated by New York's art scene, museums, and different cuisines. She might be a bit put off by the noise and the crowds at first, but she'd soon adapt. Nick would be more into the nightlife. He'd find the bars and clubs interesting, and he'd probably use his wits to get free drinks or get into exclusive places. Finnick, if he were there, would be shocked at how big everything is compared to Zootopia and might be a bit intimidated at first.
Yes, the Beastars manga has come to an end. It left fans with a memorable and impactful conclusion that tied up the various storylines and character developments.