Kimi wa Houkago Insomnia
Insomniacs After School
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Kimi wa Houkago Insomnia

Alternative Titles

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


Type: Manga
Volumes: 14
Chapters: 125
Status: Finished
Published: May 20, 2019 to Aug 21, 2023
Genre: Romance Romance
Theme: School School
Demographic: Seinen Seinen
Serialization: Big Comic Spirits
Authors: Ojiro, Makoto (Story & Art)


Score: 8.471 (scored by 1122811,228 users)
1 indicates a weighted score.
Ranked: #1662
2 based on the top manga page. Please note that 'R18+' titles are excluded.
Popularity: #384
Members: 42,289
Favorites: 1,404

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Ranked #166Popularity #384Members 42,289
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Volumes: /14
Chapters: /125


It all started with the death of one of the Astronomy Club's members. From this, the rumored ghost of the club came to life.

Grumpy insomniac Ganta Nakami stumbles across the moderately rebellious yet easygoing Isaki Magari in the Astronomy Club's abandoned observatory. Magari is jolted awake and tries to escape from the scene, only to have a broken door prevent that, forcing the two inside. The two forge an unlikely friendship, leading them to use the observatory as a safe space for them to interact.

Kimi wa Houkago Insomnia follows the insomniacs Nakami and Magari's time in the starlit observatory as they help each other cope with insomnia and the lasting effects it has on student life.

[Written by MAL Rewrite]


Kimi wa Houkago Insomnia was adapted into a live-action movie in 2023.

The series has been published in English as Insomniacs After School by VIZ Media under the VIZ Signature imprint since March 21, 2023. It was also simulpub through VIZ Manga.

Related Manga


Anamizu, Kanami
Kanikawa, Motoko
Magari, Haya
Nono, Mina
Chiura, Suzu


Aug 24, 2023
This is an updated version of my original review, I wrote the review below on March 20th 2023 and I've decided to update it since the manga has recently finished. The old review has since been deleted since mal won't let me have both up, although I have an archive for prosperity

I'm going to start off this review with a bit of a personal anecdote of how I came to discover this manga. I was lying in bed at about midnight, trying to force myself asleep as I needed to wake up early the next day. I was tired but I just could not sleep ...
Aug 20, 2023
The series is about two classmates who suffer insomnia and find their refuge in a mothballed school observatory. As a school life manga it's pretty standard, one fits in with a popular clique, and the other is a misfit because of irritability caused by lack of sleep, and they interact differently with the popular girl in class.

However, it's in how the two deal with their insomnia and their unexpected chemistry that really the main draw of this title. The leisurely pace also makes it a relaxing read.

The manga portrays loneliness, trauma, friendship, and love in a touching and realistic manner. The characters have depth and ...
May 15, 2023
Mixed Feelings
Preliminary (18/125 eps)
I started reading Kimi wa Houkago Insomnia from the "you should read this manga" thread. They have some of the manga I am enjoying right now, so I figured there's no shame in trying.

The story started as a pair of high schooler revealed that neither of them able to sleep at night and felt sleepy in the day. They found someone just like them and started hanging out. They formed an astronomy club for the right to the room they use to sleep in the day and started doing some photograph.

So far, the plot is being true to themself. Heavy on the romance side with ...

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Makoto Ojiro's Kimi wa Houkago Insomnia (Insomniacs After School) manga ended on Monday with chapter 125 in this year's 38th issue of Big Comic Spirits. more

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