Erster Trailer zu Niji-Iro Hotaru ~Eien no Natsu Yasumi~ (Rainbow-Colored Fireflies: The Eternal Summer Vacation) von Regisseur Kônosuke Uda (Galaxy Express 999: Eternal Fantasy, One Piece) basierend auf einer Geschichte von Masayuki Kawaguchi.
Toei Animation bringt den Film mit dem recht ungewöhnlichen Zeichenstil am 19. Mai 2012 in die japanischen Kinos.
The film follows a sixth-grade boy named Yūta who slips back in time 30 years during summer vacation. After his father’s death, Yūta tries to reclaim what was lost by experiencing summer activities like insect collecting and fireworks and discovering his first love in a village that should be underwater.