It's a film byShinkai Makoto. Who is the director of Hoshi no Koe (Voices of a distant star) Like Voices, it has similiar themes and is told through Shinkaii's incredible directorial abilities. Honestly I thought it was a Great film. I think Hoshi no Koe was more impressive as a work but this one is definetly worth watching if you were a fan of Hoshi no Koe