Which two writers wrote Spider-Man: Brand New Day?

Chris McKenna and Erik Sommers wrote Spider-Man: Brand New Day.

The pair had already written the three previous MCU Spider-Man films starring Tom Holland: Spider-Man: Homecoming, Spider-Man: Far From Home, and Spider-Man: No Way Home. Their return gave the fourth film continuity in its approach to Peter Parker's voice and humor.

McKenna and Sommers began working on the story for the fourth MCU Spider-Man film during the early 2020s. They developed a story that followed the consequences of No Way Home, where a magical spell caused the world to forget Peter Parker.

Their script presented Peter as an adult hero living anonymously in New York City. The film also expanded the supporting cast and introduced a more mature conflict involving isolation, responsibility, and changing superpowers.