What is ascendance of a bookworm season 4?

As of October 2021, there has been no official announcement regarding the release of a fourth season of the anime series "Ascendance of a Bookworm." The show is based on a light novel series written by Miya Kazuki and illustrated by You Shiina.

The anime follows the story of a young bookworm named Urano, who is reincarnated into a medieval fantasy world where books are scarce and literacy is a privilege. Determined to continue her passion for reading, Urano uses her knowledge from her previous life to try and create books in her new world.

Season 1 of the anime aired in 2019, followed by a second season in 2020 and a third season in 2021. Fans of the series may have to wait for an official announcement from the production studio or the creators for any updates on a potential fourth season.