The production of the movie took two years. The story and characters were created from May to September 2014. Shinkai did this with Genki Kawamura. When Makoto Shinkai told the people working at Toho about the movie on 14 September 2014, the movie was called . After, the movie was also called and , then it became "Kimi no Na wa". "Yume to Shiriseba" came from a waka (Japanese poem) that was written by Ono no Komachi.