There are fanfics that revolve around the concept of a new student arriving at the school in the Beastars world. This new character, which the reader can imagine themselves as, disrupts the existing social order and creates all sorts of new dynamics. It's really exciting to see how the established characters in Beastars react to this new presence.
First, you need to have a good understanding of the Beastars universe. Know the different species, their characteristics, and the social hierarchy in the story. Then, think about the character you want the reader to be. Decide if they're a carnivore or a herbivore and what their personality traits are.
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.