Nijiiro Hotaru: Eien no Natsuyasumi

Rainbow Fireflies

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Alternative Titles

Synonyms: Niji-iro Hotaru: Eien no Natsuyasumi, Rainbow-colored Firefly: Never Ending Summer Vacation, Niji-Iro Hotaru ~Eien no Natsu Yasumi~, Rainbow-Colored Fireflies: The Eternal Summer Vacation
Japanese: 虹色ほたる~永遠の夏休み~
English: Rainbow Fireflies
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Type: Movie
Episodes: 1
Status: Finished Airing
Aired: May 19, 2012
Producers: None found, add some
Licensors: None found, add some
Studios: Toei Animation
Source: Novel
Genres: FantasyFantasy, RomanceRomance, Slice of LifeSlice of Life
Theme: Time TravelTime Travel
Duration: 1 hr. 44 min.
Rating: G - All Ages


Score: 7.011 (scored by 18391,839 users)
1 indicates a weighted score.
Ranked: #38922
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #6550
Members: 6,802
Favorites: 14

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Yuuta was 12-year-old boy, who had lost his father in the traffic accident one year ago. In the summer vacation, he visited a deserted dam deep in the mountains, where he had a good time with his father before.

Suddenly a thunder storm occurred and he slipped on the ground. He lost consciousness and woke up to find a girl and an unfamiliar village. He time-traveled 30 years and reached a village, which sank at the bottom of the dam.

This is Yuuta's precious memory of "another" summer vacation.


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Related Anime

Characters & Voice Actors


Yagi, Yuuki


Nakai, Kazuya


Uda, Kounosuke
Matsutoya, Yumi
Theme Song Performance, Theme Song Composition
Ohira, Shinya
Key Animation
Hashimoto, Shinji
Key Animation


Opening Theme

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Nov 28, 2012
sakugaboygogogo (All reviews)
masterpiece, beautiful in any aspects, can be compared to a Miyazaki quality film.

The design is very original,
story is beautiful and nostalgic, magical.

atmosphere is wonderful

characters grow into my heart

beauty, true beauty
Jan 1, 2013
movoning (All reviews)
um...this surprisingly didn't make any sense to me.
I usually love this kind of movies, but this is probably the biggest disappointment I have experienced in a ghibli type of story.

The first half of the movie is really sweet. Some people might not like the art so much, but for me it was okay. I can stand any style of art as long as the story and characters are good. The music too is pretty nice at the beginning.
But during somewhere in the middle, things just went downhill pretty rapidly. I don't even know how to describe that last half of the movie. The easiest way read more
Oct 12, 2014
BlokeTokes (All reviews)
Nijiiro Hotaru: Eien no Natsuyasumi, or "Rainbow Fireflies: An Eternal Summer Vacation", is a light-fantasy, ghibli-esque movie. For being so unknown, it's surprising to see that this film was only released in 2012. The remoteness of this film isn't really justified either, as many might consider "Rainbow Fireflies" a hidden gem. There's a good amount of heart put into this movie, and there's a light-heartening charm to it. At the same time, the movie isn't too unique and can be a bit slow and unimaginative at times. However, that shouldn't deter an attempted viewing.

Rainbow Fireflies has a very charming, sketchy art style and is also read more
May 23, 2013
jecka1021 (All reviews)
I loved the story of this movie, with the exception of most of the end, that could have been much better. The end seemed kind of like it was just slapped on, and they forgot what just happened in the rest of this film. It was something I expected, but it didn't happen in the way I expected it to happen. However, it really is a sweet story.

The art. Yeah, I didn't like it. The art was like most Toei movies I've seen, but with a lot more computer animation. Normally, I don't mind movies animated like this, but I think the computer animation read more

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Recent Forum Discussion

Poll: Nijiiro Hotaru: Eien no Natsuyasumi Episode 1 Discussion
MoonFox - Mar 30, 2013
6 replies by SkyRenderer »»
Feb 15, 2019 8:32 PM
this movie looks pretty beautiful
busterbeam - Feb 3, 2012
7 replies by Mayuka »»
Mar 29, 2013 8:37 PM