Reiko Yoshida (K-ON!, A Silent Voice) wrote the script for Kimi no Iro based on an original concept by Naoko Yamada.
Kensuke Ushio (A Silent Voice, Chainsaw Man) is creating the music for the film.
The story of Kimi no Iro centers around Totsuko, a high-school student who attends a Christian Academy in Nagasaki and can see the hearts of people as colors.