1.The director and the writer wants the story to have a element of social network and stranger being part of family as the theme of the movie.
2.The director insisted to have 80 member of the family.
wow
3.The project was first announced at the 2008 Tokyo International Anime Fair and first trailer premiere in April 2009.
4.The manga adaptation was made by Iqura Sugimoto in July 2009.
5.It earn 1 million dollars in it's first week,it opened on 127 theaters.
6.It earned 18 million dollars worldwide.
7.It was held 2010 Japan Academy Prize for Animation of the Year and has been nominated on several prestigious awards international.
8.It is rank as the 7th most grossing anime movie.
9.It rank 76 in the box office in United State for it's first week there.
10. It's scored 5/5 in The Japan Times.
This is the most underrated film ever I have ever encounter just saying,it deserves more...