Le Monde describes the film as a masterpiece, and Clarisse Fabre writes: "Feminine Western, fantastic, feverish and sensual, After Blue tells, in hollow, the fantasy of a society that would like to start everything from scratch. In After Blue, a veritable planet of breasts, the nudity of hairy bodies takes on an animal turn, sexuality mutates right down to ejaculatory breasts. We dream with our eyes wide open in front of so many finds, puns and agility in making fun of the madness of the world and the permanent war (political, economic, sexual) which seem to undermine all human action." On the other hand, Le Figaro considers the film, from the pen of Etienne Sorin, as being "to be avoided": "After The Wild Boys, Bertrand Mandico draws his inspiration from the science fiction of the 1970s today."
It is presented in competition in 2021 at the Locarno International Film Festival, where it won the FIPRESCI Prize (International Critics), and at the Toronto International Film Festival. It won the prize for best film in competition at Fantastic Fest (Austin, USA), as well as the Special Jury Prize and the FIPRESCI Prize (International Critics) in Sitges.
Filming begins on November 12, 2019 and lasts seven weeks. It takes place in Nouvelle Aquitaine, in the studio (a hangar in Brive-la-Gaillarde) and in natural settings in Corrèze and Creuse and, for the scenes by the sea, near La Tremblade, in Charente-Maritime.
All of the weapons in the film are named after high end fashion brands. Gucci, Paul Smith, Louis Vuitton.