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