The Room Nobody Was Using: Insomniacs After School and the Stars Only the Sleepless See

The Night That Wouldn’t End

In the winter of my second year of high school, I stopped sleeping.

Not dramatically — I was not lying awake in tears, not kept up by any particular crisis. I simply could not cross the threshold. I would close my eyes at eleven o’clock and lie there in the dark, entirely awake, watching the luminous hands of my clock tick toward two, then three. By four the delivery trucks would start somewhere on the road below my window, a low diesel rumble that meant the night was genuinely over and I had been awake for all of it. I would get up, dress in the dark, and leave for school before my mother woke. I was seventeen years old and I had discovered, with no announcement, that my body had decided to stop cooperating with time.

The Japanese school day has a particular quality when you have not slept. The fluorescent light presses differently. Your name being called by a teacher reaches you half a second late, as if traveling through water. The world runs slightly out of sync, and you stand in it like a person watching a film with the subtitles delayed — you understand what is happening, but the experience of it never quite settles.

I thought about this often while reading Insomniacs After School (放課後インソムニア — Hōkago Insomnia). Not because Makoto Ojiro captures the physical texture of sleeplessness — though he does, precisely, in small drawn details I was not expecting — but because he understands something I could not have articulated at seventeen: that sleeplessness, in a country that treats sleep as optional, is not merely an inconvenience. It is a kind of exile. And the discovery of another exile, in an abandoned room after school, is the beginning of a story far more tender than its premise suggests.

Two Exiles and One Abandoned Room

The setup is precise. Nakami Ganta is a high school student who cannot sleep at night and therefore cannot stay awake during the day. His insomnia is chronic, disruptive, and — this detail matters — socially costly in a school environment where sleeping in class carries real consequences. He is not a delinquent. He is exhausted, quietly. He has become expert at finding hidden corners of the school where he will not be discovered.

One afternoon he pushes open the door of the school’s long-abandoned astronomy clubroom. The room is a ruin of accumulated time — dusty equipment, old star charts, windows positioned to reduce light. It is perfect for sleeping. He settles in.

Isaki Gureimaru is already there.

She has the same problem. Same insomnia, same daily exile, same instinct for finding the one room no one else uses. They reach an uneasy truce. They begin, cautiously, to share the space. They climb to the observatory dome. They look at stars.

What Ojiro is asking with this manga — the real question beneath the romance — is: what happens to two people who are excluded from ordinary time, and who discover each other in the hours between? The stars and the astronomy backdrop are not decorative. They are thematically structural. The night sky is the one landscape that belongs to those who cannot sleep. Nakami and Isaki are not merely falling in love in an unusual location. They are discovering that their exclusion from normal rhythm has given them access to something most people never see.

This distinction — between the sleepless as deprived and the sleepless as uniquely awake — is the quiet argument the manga makes across its fourteen volumes.

The Debt of Sleeplessness

Japan has an exceptionally complicated relationship with sleep.

Inemuri (居眠り) — the practice of sleeping in public, most commonly seen on commuter trains — is one of the first cultural observations every foreigner in Japan makes. You see it everywhere: businessmen asleep at ninety degrees in their seats, students folded over textbooks, office workers passed out on the Yamanote Line at eleven p.m. What appears to Western eyes as a relaxed relationship with public rest is, in fact, almost the opposite. Inemuri is not casual. It is a performance of dedication.

The social logic works like this: a person who falls asleep on a train or in a meeting has, by implication, been working so hard that their body has simply given out. The sleep is proof of effort. It signals total commitment — you were not lazy in bed this morning; you spent that time working, and the debt accumulated until your body collected it in public. Inemuri is exhaustion as credential. In office culture, the salaryman who sleeps at his desk is demonstrating, not shirking.

Nemuri no shakkin (眠りの借金) — sleep debt, “the debt of sleeplessness” — is a concept researchers use clinically, but the cultural reality it describes predates the science. Japan runs on accumulated sleep debt. The country glorified overwork as identity for decades. Karoshi (過労死) — death from overwork — is an official medical and legal category in Japan. A nation that produces enough overwork deaths to require a specific legal framework is a nation that has decided, implicitly, that sleep is less important than production.

And then a generation reached adolescence having absorbed all of this, and found itself unable to sleep.

This is Nakami and Isaki’s context. Their insomnia is not merely biological — it occurs in a society that simultaneously glorified sleep deprivation and stigmatizes the sleepy. They cannot sleep at night and cannot stay awake during the day, which makes them bad students by visible metric. The school sees them dozing in class and draws conclusions. Their internal reality — they are exhausted precisely because they were awake all night, not because they were lazy — is invisible from the outside.

Ojiro never makes this argument explicitly. The manga does not deliver speeches about overwork culture. But it is built into the structure: the school as a place where Nakami and Isaki are constantly failing a test they did not design, in a subject they did not choose, for an audience that will not ask what happened the night before. Their sanctuary is not just personal. It is a refusal of the premise that their nights are evidence of their inadequacy.

The abandoned observatory is where they go to exist outside that judgment. What grows between them, in that space, is something the daytime school could not have produced.

The Kakurega and the Compressed Self

There is a recurring structure in Japanese coming-of-age narratives so common it functions as a convention: the discovery of the hidden room.

Kakurega (隠れ家) means, literally, “hidden house” — a refuge, a shelter, a private space concealed from normal social life. In practice, in manga and in Japanese school life generally, the kakurega is almost always specifically an abandoned or unlocked room after hours: the empty clubroom, the rooftop access nobody checks, the storage space that can be latched from the inside. These spaces appear so consistently in Japanese fiction set in schools that their recurrence requires explanation.

Japanese school culture is not designed for individuality. This is not a criticism — it is an observation about a system built around different values. The uniform, the assigned classroom, the club structure, the cleaning rotations, the seating arranged by academic standing or lottery — all of it creates a social environment where the student is visible, legible, and accountable at nearly every moment. Privacy is not a design feature. It is what you find in the gaps.

The consequence is that in Japanese coming-of-age narratives, the moment of discovering a private space carries enormous weight. It is not simply “cool, a secret room.” It is the discovery of a place where the social architecture does not reach — where you do not have to be your school-self, your grade, your club, your assigned role. The kakurega is where Japanese adolescents in fiction (and, when they are lucky, in life) experience the luxury of being undefined.

Nakami and Isaki’s astronomy clubroom is a perfect kakurega in this tradition. It is abandoned — previous students claimed it and left, and the school has not repurposed it, so it exists in administrative limbo. It is unlocked and forgotten. It has a specific feature that makes it theirs rather than anyone else’s: the dome, the sky, the equipment that rewards the specific hours they are already awake to keep. A person without insomnia cannot appreciate the room at its best. The room was made for them by accident.

What Ojiro understands about the kakurega — and what makes this manga more than a cute romance — is that the private space does not just shelter the people in it. It lets them become. In the astronomy clubroom, Nakami discovers he is genuinely interested in stars, not merely using the room to sleep. Isaki learns she is more capable than her visible daytime exhaustion suggests. They encounter versions of themselves that the school day has no time to reveal. The kakurega is not just a setting. It is the condition that makes the relationship possible.

This is why the romance develops as slowly as it does, and why the slowness feels right. Nakami and Isaki are not just learning each other. They are learning who they are when nobody is grading them. That takes time. The manga does not rush it. The fourteen volumes are not filler — they are the actual substance of the transformation.

Ma: The Stars Between Words

The dominant experience of reading Insomniacs After School is silence.

Not editorial silence — the panels are not empty. The series is set in the Noto Peninsula in Ishikawa Prefecture, a real landscape of dramatic coastline, rice fields, and some of the darkest skies in Japan outside of Hokkaido. Ojiro draws it with evident love and considerable spatial intelligence. The backgrounds are specific, studied, local in ways that go beyond set dressing — this is a place the artist knows, and the texture of that knowledge shows in how the water moves and where the light falls. You are not looking at generic rural Japan. You are in a specific place that has its own quality of winter cold and summer fog.

But within these detailed spaces, between these two characters, enormous amounts of nothing are permitted to exist.

Ma (間) is among the most discussed and least understood concepts in Japanese aesthetics. The dictionary definition is “gap,” “interval,” “space” — which covers its literal meaning without touching what it actually means in practice. In music, ma is the rest, the silence between notes that gives the sound meaning. In architecture, ma is the empty space that defines the room. In theater, ma is the pause before the line — the moment where what has not yet been said fills the audience. In all of these uses, the negative space is not an absence. It is an active presence. It is the thing doing the work.

In human relationships — and this is what Ojiro is using it for — ma is the silence that occurs when two people are comfortable enough together to not fill the air between them. It is the late-night quiet of people who do not need to perform for each other. It is the intimacy of coexistence without transaction.

Nakami and Isaki spend a great deal of their time together doing nothing in particular. They lie side by side looking at the ceiling. They are awake on a futon in the observatory, not talking, while the clock moves toward three a.m. They take photographs — Nakami becomes seriously interested in astrophotography — and Isaki watches, or assists, or simply stays present. They eat convenience store food in near silence. They drive to observation spots and stand in the dark looking up.

Western critics sometimes describe this pacing as “slow” — which is technically true and critically useless. Slow compared to what? Compared to manga that treats every chapter as a vehicle for plot delivery, certainly. But Ojiro is not attempting that kind of manga. He is attempting something that requires the reader to settle into a different rhythm — to let ma do what ma does, which is to accumulate meaning through patience.

The romantic development of Insomniacs After School happens almost entirely in these silences. The moments of explicit feeling — the confessions, the declarations, the acknowledgments — are present, and they land with appropriate weight. But they land because of what precedes them. The cumulative hours of shared nothing, the comfort built in darkness over two people’s sleepless nights — this is the actual substance of the relationship, and Ojiro trusts the reader to understand that doing nothing together, over and over, with no agenda, is one of the most intimate things two people can do.

This is not a Japanese cultural idiosyncrasy. But Japan has a stronger tradition of treating it as narrative than most contemporary English-language storytelling does. The ma in Insomniacs After School is not a pacing failure. It is the story’s central argument: that proximity, shared stillness, and the willingness to exist alongside another person without performing anything constitutes something genuine and rare. The stars are beautiful. But they are not what the manga is about. The manga is about two people who found, in an abandoned room, the experience of not having to be anything except quietly awake.

The Noto Peninsula: Geography as Character

The setting is not incidental.

The Noto Peninsula juts into the Sea of Japan from Ishikawa Prefecture like a narrow finger pointing northwest. It is not a famous travel destination. It does not have the Buddhist grandeur of Kyoto or the convenience of Tokyo. It is agricultural, coastal, quiet, and — crucially — dark. The peninsula has some of the lowest light pollution in mainland Japan, which makes it an actual destination for amateur astronomers and a logical setting for a manga built around watching stars.

Ojiro is clearly from or deeply familiar with the area. The local geography — specific capes, actual observatories, the coastal roads, the way weather moves in from the sea — is drawn with a fidelity that goes beyond research. The Noto landmarks Nakami and Isaki visit are real places you can look up and find on a map, which gives the manga a grounding unusual in manga romance.

There is also something appropriate in choosing this specific geography. The Noto Peninsula is not thriving. Like much of rural Japan, it is declining — the young leave for Kanazawa or Tokyo or Osaka, the communities age, the secondary schools lose enrollment. Setting a coming-of-age story here is not coincidental. The manga’s landscape is itself something temporary, quietly, in the way that Nakami and Isaki’s high school years are temporary. Their discovery of the observatory is set against a backdrop that will not remain as it is — that is already, slowly, changing. The stars they watch will continue. The specific moment of watching them from this specific school, together, will not.

Ojiro does not make this explicit either. But the landscape carries it. The Noto Peninsula is beautiful and marginal and real, and setting these two sleepless students in the dark of its sky is its own kind of statement about what it means to find something worth staying awake for, in a place the world is quietly moving away from.

Verdict

Insomniacs After School is not a manga that arrives at you. It requires you to go to it — to adjust your reading pace, to let the silences mean something, to trust that a romance built on shared sleeplessness and borrowed observatory time is building toward something real even when the chapters feel like they are barely moving.

When you do this, what you find is a completed romance of unusual honesty. Ojiro is not interested in the dramatic version of falling in love. He is interested in the version that actually happens to people who are tired and imperfect and stuck in a structure that does not quite fit them: the version where intimacy accumulates slowly in the leftover hours of the day, where the relationship develops not through grand gestures but through the steady accumulation of shared midnights.

The anime adaptation that aired in 2023 is worth watching and gives the setting and characters the color and sound they deserve. But the manga is the primary object. Ojiro’s draftsmanship — the Noto landscapes, the night sky photography rendered as page panels, the small expressive details in faces — is the kind of visual storytelling that the printed page does better than any screen.

You will love this if:

• You have ever found a private space that felt like it was waiting for you
• You read Yotsuba&! or Solanin and wanted a manga that operated at that speed but with a romance
• You care more about two people learning to be at ease with each other than about dramatic plot turns
• You are interested in astronomy, or rural Japan, or both
• You have ever lain awake at three a.m. and found something oddly clarifying about it

You might struggle if:

• You need a plot engine running at all times
• Slow-burn romance without comedic relief frustrates you
• You find large amounts of atmospheric silence in manga to feel like stalling
• You want a romance that resolves its central tension early and spends time elsewhere

Rating: 8/10

The two points I do not award are for an uneven middle stretch — roughly volumes seven through nine — where the pacing that is the manga’s strength tips slightly into a repetition that even patient readers may feel. A single volume could have been removed from this section without losing anything essential. This is a minor structural imbalance in a series whose architecture is otherwise carefully considered. The final arc recovers fully, and the ending earns the time spent reaching it.

The first three volumes alone establish something rare: a romance that understands that the most intimate thing is not what you say or do together, but what you do not need to say or do. That you can simply be present, under the same sky, in the same abandoned room, awake when the rest of the world is sleeping.

I keep returning to a question this manga pressed gently into me: who was the person you were awake with in the hours nobody else saw? Not the performed version of yourself, not the graded version — the one who appeared in the gap between midnight and dawn when you were too tired to pretend anything. I think those hours produce something that ordinary daylight never quite recreates. Insomniacs After School understands this, and treats it as the sacred thing it is. I would like to know what that room looked like for you.