Kosuke Kumagaya and Natsume Tonai, both 11 years old, are childhood friends who grew up like siblings. The relationship between the two began to be strained after the death of Kosuke's grandfather, Yasuji. One day during the summer vacation, Kosuke and his classmates, Taishi, Yuzuru, Reina, and Juri, sneak into the "ghost housing complex" that has been slated for demolition. The housing complex was also a house full of memories where Kosuke and Natsume grew up. Kosuke unexpectedly encounters Natsume there and hears about the existence of a mysterious boy named Noppo in the complex. The group argues and heavy rain ensues. After the rain stops, the housing complex is suddenly drifting in the middle of the ocean.
The film was first announced by Netflix in September 2021. It was announced to be produced by Studio Colorido and directed by Hiroyasu Ishida, with scripts by Ishida, as well as Hayashi Mori and Minaka Sakamoto. Akihiro Nagae designed the characters and Umitarō Abe composed the music.[4]Zutomayo performed the film's theme song, "Kieteshimai Sō Desu" (It Seems I'm Fading Away),[5] as well as the insert song "Natsugare" (Summer Slump).[6] The film was released on September 16, 2022, on Netflix and in Japanese theaters.[1]
