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.
Starring
Kyoko Yoshine
Aya Chiyono (voice)
Takumi Kitamura
Mamoru Suzuhara (voice)
Haruka Michii
Saki Akutsu (voice)
Makoto Koichi
Malet (voice)
Megumi Han
Kaori Yamazaki (voice)
Rie Miyazawa
Hitomi Nakayama (voice)
Takahiro Sakurai
Masahiko Honda (voice)
Takeo Otsuka
Hiroto Honjō (voice)
Tatsuhisa Suzuki
Sōma Ogata (voice)
Mitsuru Miyamoto
Yamazaki - Kaori's Father (voice)
Ryusei Nakao
High-level Politician (voice)
Tomokazu Seki
Immigration Administrator (voice)
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