Rainbow Fireflies (2011)
1h 44min · Animation · 19 May 2011
Yuuta is a 12 year old boy, who lost his father in the accident one year ago. For the summer vacation, he visited a deserted dam deep in the mountains, where he had a good time with his father. Due to a thunder storm, he slipped on the ground, lost consciousness and woke up 30 years before.