The Worst Person in the World is a 2021 romantic comedy-drama film directed by Joachim Trier, who co-wrote the screenplay with Eskil Vogt. It is the third film in the director's Oslo trilogy, following Reprise and Oslo, August 31st. From Wikipedia
The family drama reunites Trier with Renate Reinsve and explores themes of estrangement, trauma, and the healing power of art, fueling Palme d’Or speculation.