Sirocco and the Kingdom of the Winds (2023, dir Benoît Chieux)

Agnès, Juliette and Carmen's neighbour, writes children's storybooks that take place in a fantasy world, The Kingdom of the Winds. The intrepid sisters discover a passageway between their world and this extraordinary universe. Once on the other side the girls take on the appearance of cats, and discover Sirocco, a terrifying character who can control the wind.

https://www.themoviedb.org/movie/676696-sirocco-et-le-royaume-des-courants-d-air