UPDATE 14/12/17: Madman have released a teaser with English subtitles, added below.
A teaser trailer for Summer Wars director Mamoru Hosoda’s upcoming Mirai no Mirai (Mirai of the Future) has been uploaded on Toho’s YouTube channel.
Continuing with familial themes from Hosoda’s previous films, the story focuses on the four-year-old Kun, who feels jealous when he gets a new baby sister, named Mirai. Kun believes that his parents have turned all of their affection towards her. However, during this time he is visited by an older Mirai from the future.
Written and directed by Hosoda, the film comes from his animation studio, Studio Chizu, with Hiroyuki Aoyama as animation director.
Mirai no Mirai opens in Japan on 20 July 2018.