A freak blizzard buries Rettoran in snow and delays the start of classes, so Kurumi and friends go out to play on the frozen lake. When they decide to build a sauna, Kurumi finds a massive stone that may be more than it seems.
Hana Hishikawa
Kurumi Mirai (voice)
Misuzu Yamada
Yuzu Edel (voice)
Yui Horie
Minami Suzuki (voice)
Ayumi Mano
Maki Kumil (voice)
Yukiya Hayashi
Asuka Kurumaru (voice)
Chiaki Kobayashi
Kyō Kurumaru (voice)
Hikaru Midorikawa
Northern Harris (voice)
Mikako Komatsu
Kai Mirai (voice)
Saori Goto
Lemone Juicy (voice)
Yuka Nukui
Mikana Fruity (voice)
Sayumi Suzushiro
Sally Andol (voice)
