Season 1 Ganta Nakami is a high school student who suffers from insomnia. He meets Isaki Magari, a girl with the same condition. A relationship forms as they share a secret and catch up on their sleep in their school’s abandoned observatory. Details Casts Videos Galleries Posters Season Lists Episode Lists Title Season 1 Genres Animation Comedy Drama Air Date 2023-04-11 Episode Runtime 00 Hours 24 Minutes Season Number 1 Episode Count On Season 1 13 Production Companies LIDENFILMS, Pony Canyon, Shogakukan Gen Sato... Ganta Nakami (voice)... Konomi Tamura... Isaki Magari (voice)... Haruka Tomatsu... Yui Shiromaru (voice)... Seiichiro Yamashita... Tao Ukegawa (voice)... Lynn... Motoko Kanikawa (voice)... Natsumi Fujiwara... Kanami Anamizu (voice)... Sumire Morohoshi... Mina Nono (voice)... Mamiko Noto... Usako Kurashiki (voice)... Sho Karino... Rui Haida (voice)... Trailer 2 (Trailer) Trailer [Subtitled] (Trailer) Original Size (1920x1080) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1280x720) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1200x1800) Original Size (927x1390) Original Size (1200x1800) Original Size (1065x1500) Original Size (729x1080) Original Size (1000x1500) Original Size (2000x2829) Original Size (1100x1545) Original Size (706x1000) Original Size (1100x1545) Original Size (1500x2122) Original Size (1000x1500) Original Size (2000x3000) Original Size (2000x3000) Original Size (664x1000) Season 1 13 Episode(s) 2023-04-11 Episode 1 2023-04-11 Capella... Episode 2 2023-04-18 Mu Scorpii... Episode 3 2023-04-25 Fomalhaut... Episode 4 2023-05-02 Venus... Episode 5 2023-05-09 Canopus... Episode 6 2023-05-16 Shooting Star... Episode 7 2023-05-23 The Fireworks Star... Episode 8 2023-05-30 The Congregation Star... Episode 9 2023-06-06 Altair and Vega... Episode 10 2023-06-13 Spica of Virgo... Episode 11 2023-06-20 The First Stars of Dawn... Episode 12 2023-06-27 Planet... Episode 13 2023-07-04 Methuselah...