It's a Summer Film

It's a Summer Film (サマーフィルムにのって), also translated as It's a Summer Film!, is a 2021 Japanese science fiction romantic comedy written and directed by Sōshi Masumoto. It is set in a Japanese high school during the filming of a school film called Samurai Spring.

Premise
In 2020, Japanese high school student Barefoot and her friends decide to make an old-fashioned samurai film called Samurai Spring, instead of the teen romance film that they are supposed to be working on with the film club. During filming, one of the group is revealed to be a time traveler, who is a fan of her future films.

Cast

 * Marika Itō as Barefoot
 * Daichi Kaneko as Rintaro
 * Yuumi Kawai as Kickboard
 * Kilala Inori as Blue Hawaii
 * Mahiru Coda as Karin
 * Shun'ya Itabashi as Daddy Boy

Release
It's a Summer Film! was screened in 2021 at Fantasia Fest. It was also shown at the Tokyo International Film Festival.