Kimi wa Houkago Insomnia

Insomniacs After School

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Alternative Titles

Synonyms: Kimisomu
Japanese: 君は放課後インソムニア
English: Insomniacs After School
More titles


Type: TV
Episodes: 13
Status: Finished Airing
Aired: Apr 11, 2023 to Jul 4, 2023
Premiered: Spring 2023
Broadcast: Tuesdays at 00:00 (JST)
Licensors: Sentai Filmworks
Source: Manga
Genre: RomanceRomance
Theme: SchoolSchool
Demographic: SeinenSeinen
Duration: 23 min. per ep.
Rating: PG-13 - Teens 13 or older


Score: 8.081 (scored by 7933379,333 users)
1 indicates a weighted score.
Ranked: #5272
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #1159
Members: 210,080
Favorites: 1,843

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Ranked #527Popularity #1159Members 210,080
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Episodes: /13


High schooler Ganta Nakami has trouble falling asleep most nights. As a result, he is irritable at school, always searching for an opportunity to find a secluded place to doze off. On the other hand, Isaki Magari is a free spirit who is well liked by her friends, but no one is aware of her sleep disorder. She makes use of the school's abandoned astronomy club observatory as her secret sleeping bunker when she needs to get some shut-eye.

As fate would have it, Nakami finds Magari napping in the observatory. When Magari discovers that she and Nakami have something in common, she offers to share her secret sleeping spot with her fellow insomniac. As the two find warmth in each other's company, the struggles they face start to become easier to confront.

[Written by MAL Rewrite]


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Related Anime

Characters & Voice Actors



Opening Theme

Apple Music
Amazon Music
Youtube Music
"いつ逢えたら" by aiko

Ending Theme

"いつ逢えたら" by aiko (eps 1)
"ラプス" by Homecomings (eps 2-6, 8-)
"ヘルツ" by Homecomings (eps 7)


Apr 21, 2024
Kimi wa Houkago Insomnia is a poignant anime that delves into the complex inner lives of two high school insomniacs, Nakami and Isaki, through their shared late-night encounters in a deserted school observatory.

While some viewers might dismiss this anime as boring or monotonous, I believe such opinions stem from a misinterpretation of its thematic depth. The series excels in its grounded, realistic portrayal of adolescent struggles, exploring personal trauma and the emotional battles each character faces.

The relationship between Isaki and Nakami is exquisitely crafted. As they find solace in each other's company, their mutual encouragement helps them confront and overcome their traumas, fostering a profound ...
Oct 21, 2023
Mixed Feelings
At first it was a little doubtful because the quality was bad, but it turned out that was only part of the fairy tale, whereas the main story was really good.

For the beginning, the story of this anime is quite good and the relationship between them really makes me want to fall in love too.
But it's a shame that episode 6 onwards starts to get boring, the storyline is filled with things that I don't really like, like telling about the past, telling about cultural festivals and so on, while their intimate relationship is increasingly disappearing in my opinion.

Another drawback is that many scenes ...
Mar 25, 2024
Watching just one or two episodes, one may not realize how monotonous it can be, especially due to the quality of the characters and their relationships. However, the problem arises when watching more episodes, as the work seems to lose its momentum and offer nothing new.

There is a lack of elements to hold the viewer's attention and encourage them to watch the next episode, making the narrative somewhat monotonous. Although it didn't bother me directly while watching, sometimes it feels like we already know everything that will happen. Although it avoids clichés, the absence of cliffhangers at the end of episodes could make a difference. ...

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Recent Forum Discussion

English Dub???
ANIk_003 - May 14
16 repliesby MrBoomTop10Anime »»
May 20, 4:00 AM
Poll: Kimi wa Houkago Insomnia Episode 6 Discussion ( 1 2 3 )
KANLen09 - May 15, 2023
104 repliesby winsonkeren »»
May 3, 8:12 AM
So… still nothing about season 2?
A-lil-weeb-dog - Feb 8
17 repliesby saketsahu »»
Apr 26, 2:26 AM
Anyone else want to try out astrophotography after watching this?
D-A-W - Apr 13
1 repliesby kartik111 »»
Apr 24, 11:24 AM
Poll: Kimi wa Houkago Insomnia Episode 11 Discussion ( 1 2 3 )
KANLen09 - Jun 19, 2023
147 repliesby D-A-W »»
Apr 12, 12:12 PM