During the whole shoot, Marion Cotillard didn't talk to Melvil Poupaud, who found it very disturbing. Only after shooting did she explain to him that she did it to amplify the hatred between the two characters, and she apologized for it.
Filmed between October and December 2021. Filming took place in the cities of Paris, Lille and Roubaix in France.
The family's name is Vuillard just like in Arnaud Desplechin's 2008 film, A Christmas Tale (2008), also starring Melvil Poupaud (who played Ivan Vuillard). Both films also have characters named Abel and Faunia.
Director Arnaud Desplechin's third collaboration with actress Marion Cotillard. The previous were My Sex Life... or How I Got Into an Argument (1996) and Ismael's Ghosts (2017).