In an underground shelter-city encased in ice, Setsuna meets a young girl named Rinne and begins helping her with a mysterious invention. It can apparently help save the world, but its true nature is unclear. Meanwhile, the city itself will very soon perish.
Yukari Tamura
Rinne Ohara (voice)
Tatsuhisa Suzuki
Setsuna Sanzenkai (voice)
Kana Asumi
Karen Kurutsu (voice)
Yui Nakajima
Mei Tandori (voice)
Tomoyo Takayanagi
An Hatoma (voice)
Takako Tanaka
Emiri Sunada (voice)
Rina Sato
Kuon Ohara (voice)
Takamasa Mogi
Tarō Harisu (voice)
Hibiku Yamamura
Sora Garandou (voice)
