Yuko Takeuchi and Shido Nakamura got married in 2005 after shooting the film. Their marriage only last till 2006 and it ended in divorced.
Copies of the book that Mio creates for her son Yuji, promising to return from the Archive Star during the next rainy season, are on sale in Japan.
Based on novel "Ima, Ai ni Yukimasu" by Takuji Ichikawa (published February 27, 2003 by Shogakukan).