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.

Cast:Kyoko Yoshine, Takumi Kitamura, Haruka Michii, Makoto Koichi, Megumi Han, Rie Miyazawa,

Genre:Animation, Drama, Action,

country:Japan,

Production:Ajiado,