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.
Nijiiro Hotaru: Eien no Natsuyasumi has finished publishing and it has 11 Chapters. It is also Known as: 虹色ほたる 〜永遠の夏休み〜, 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
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