To keep using their school's abandoned observatory as a refuge, two sleepless high school students decide to revive the defunct astronomy club.
as Isaki Magari
as Ganta Nakami
as Usako Kurashiki
as Yui Shiromaru
as Tao Ukegawa
as Kanami Anamizu
as Motoko Kanikawa
as Mina Nono
as Haya Magari
as Isaki's Father
as Mother of Isaki's Childhood Friend
as Director of a Historical Archive
as Isaki's Mother
as Ganta's Father
