High school student Yuki Hase wants to become close with classmate Kaori Fujimiya who is alway by herself. Kaori Fujimiya refuses to become close with Yuki Hase, because she forgets her friends every new Monday. Even though Kaori tells Yuki why she doesn't want to become friends, Yuki still wants to become close to her.
One Week Friends is a Japanese youth romance film written by Yōko Izumisawa, directed by Shōsuke Murakami, starring Haruna Kawaguchi and Kento Yamazaki. Based on the manga series of the same name, written and illustrated by Matcha Hazuki. It was released in Japan by Shochiku on February 18, 2017. The theme for this movie is "Kanade for Isshukan Friends" by Sukima Switch.