In the town of Saima, when summer is about to begin, a group of six high school students intend to live a secret adventure by spending seven carefree days in a ruined mining facility.
Not streaming on a subscription service in the US right now.
Starring Kyoko Yoshine, Takumi Kitamura, Haruka Michii, Makoto Koichi, Megumi Han, Rie Miyazawa, Takahiro Sakurai, Takeo Otsuka, Tatsuhisa Suzuki, Mitsuru Miyamoto