The original plan was for Hiroko to lose her hearing, but Toyokawa, who plays Koji, suggested: "Why don't I become a deaf person?" The story was changed so that Koji lost his hearing.
Initially, Shiori was hired to be a university student.
Toyokawa played the main character who lost his hearing, so he wore earplugs during filming.
On the set of the last episode. It appeared as a fictitious stop called "Sanbonmisaki" on the Tokai Jidosha bus company operating in the same area. The day after the broadcast, the company received so many inquiries that the phone lines in all its offices were overwhelmed.
The works of plants and people painted by Etsuji Toyokawa, who plays the role of a painter in the drama, are the works of Western painter Mitsuji Suganuma.