Insomniacs After School 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 Title Insomniacs After School Genres Animation Comedy Drama First Air Date 2023-04-11 Last Air Date 2023-07-04 Episode Runtime 00 Hours 24 Minutes Total Season(s) 1 Total Episode(s) on All Seasons 13 Runtime 24 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) Season 1 13 Episode(s) 2023-04-11