Insomniacs After School
A TV Tokyo Original
Insomniacs After School follows Ganta Nakami, a high schooler whose nights are spent counting sheep and scrolling through his thoughts. He meets Isaki Magari, a girl sharing the same restless condition, and a tentative friendship blooms. Instead of typical teen drama, the series treats their... Read more
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Streaming availability last verified: January 31, 2026
About Insomniacs After School
Insomniacs After School follows Ganta Nakami, a high schooler whose nights are spent counting sheep and scrolling through his thoughts. He meets Isaki Magari, a girl sharing the same restless condition, and a tentative friendship blooms. Instead of typical teen drama, the series treats their insomnia as a lens on loneliness, trust, and late night conversation. The pair gravitate toward the school's abandoned observatory, where quiet skies and the hush of the building provide a rare space to open up. As they swap secrets, they begin to rely on each other to survive the insomnia that rules their days. The show uses understated humor and intimate moments to explore adolescence under unusual circumstances. Its pace stays gentle and earnest throughout.
This 2023 animated series was created by Rintaro Ikeda and Makoto Ojiro. It presents an original concept rather than adaptation, and the voices bring the leads to life with Gen Sato as Ganta Nakami and Konomi Tamura as Isaki Magari.
The show has a measured reception with an average rating of 7.6 out of 10 from 48 votes, suggesting a solid appeal among viewers who enjoy thoughtful character focus. Central themes include insomnia as a social and emotional signal, friendship, and finding safety in night time spaces.
The series has drawn attention for its quiet nocturnal mood and restrained humor, offering a different flavor of teen drama. Its observatory setting and delicate look have sparked discussion among fans who appreciate animation that treats sleep and loneliness with care.
Details
- Release Date
- April 11, 2023
- Episode Length
- 24m
- Rating
- TV-14
- User Ratings
- 48 votes
- Type
- TV Series
- Seasons
- 1
- Episodes
- 13
- Network
- TV Tokyo
- Status
- Ended
- Genres
- Animation, Comedy, Drama
- Country
- Japan
- Studio
- LIDENFILMS +2 more
- External Links
- View on IMDB
Official Trailer
Cast
Gen Sato
Ganta Nakami (voice)
Konomi Tamura
Isaki Magari (voice)
Created by: Rintaro Ikeda, Makoto Ojiro
Seasons (1 season, 13 episodes)
Season 1
13 episodes - 2023