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