City Hall Bug! — Nashigasaka City Hall, Special Trends Unit

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Chapters online

17 chapters online. Start anywhere.

Ep. 17
PHP2Shell? Just Shut It All Down!!
Emergency PHP Patch (Stop the Server)
On the night of October 21, 2026, two serious flaws were found in PHP (nicknamed "PHP2Shell"), and big websites went into emergency maintenance one after another. The basement section of Nashigasaka City Hall gets the night shift until the patch comes out. "Shut it down and it's safe. Shut it ALL down and I get to go home!!" Tetsu starts switching off the city's 27 websites, one by one...
Ep. 16
The Basement Strikes Back
Inter-Department Sports Day (Office Olympics)
It's autumn, and City Hall's inter-department sports day is on. The winning section gets to pick any empty room in the building. Tetsu wants a corner room for napping; Rena wants to beat her elite rival Himuro. But the basement section has only four members. Then Tetsu decides the delivery guy who stops by every day is "practically one of us"...
Ep. 15
AI? Already Installed
AI for Small Businesses (Auto-Pilot)
"We haven't even installed AI, and it already scares us." The shopkeepers of the local shopping street come down to the basement office. Tetsu, woken from his nap, snaps at them, half-sleeps through Rena's security lecture, then names himself an "AI consultant" and, for 30,000 yen a month, hands every shop's phone over to AI.
Ep. 14
Nashigasaka's Own
The Nobel Prize
October. Ahead of the Nobel Prize announcements, the main office sends word: "If a laureate has ties to Nashigasaka, hang a banner before anyone else." But no researcher has any ties to the town. "Anyone who ever passed through counts!!" Tetsu's banners start lining the roof of City Hall.
Ep. 13
The Underground Vault Is Open
Too Much Personal Data
October. News that ten million app members' data had leaked has the town of Nashigasaka on edge. When old Kiku from the pear orchard brings thirty years of customer slips down to the basement in a tin, Tetsu has a brainstorm: "Gather it all here, and we only have to guard one place!!"
Ep. 12
One Hundred Numbing Grams
Certified Scales
The son of an old Chinese diner wants to sell trendy mala tang by weight, and after being bounced between counters he ends up in the basement section. Selling by weight requires a government-certified scale. "Certified? I'll certify it myself!!" Tetsu decides a City Hall stamp can leap right over national law...
Ep. 11
The New Guy Throws Out the Paper
Traceability
October, Niihama, Ehime. Sent on a factory study tour nobody at City Hall wanted, Tetsu visits the small Kakikura Ironworks — and his builder's physique gets him mistaken for a temp worker. Seeing the craftsmen write every measurement twice on paper, Tetsu spots the slogan "No Double Work" and has an idea...
Ep. 10
Wrongly Accused
Replace All
November in Nashigasaka. Mr. Nashida, the 82-year-old head of a neighborhood association, brings his handwritten circular down to the basement: his hand shakes too much to write, and the circular keeps stalling halfway around the block. "I'll make the circulars for all 120 associations!" Tetsu sets out to mass-produce 120 copies in one night with "Replace All."
Ep. 9
A Change of Kimono, for a Hundred
Kimono Day
November in Nashigasaka. The owner of the old kimono shop asks the basement team to help with her last kimono parade — there aren't enough kimono or hands to dress people. "All those kimono sleeping in chests are my inventory!" Tetsu's eyes light up at the idea of renting them out.
Ep. 8
Everyone Is the Section Chief
Road Use Permit
Ten days before Halloween, the head of Nashigasaka's shopping street comes down to the basement: he wants to fill his shuttered street with young people who can't make it to Shibuya. Promised half the stall fees, Tetsu comes up with an outrageous costume theme.
Ep. 7
These Stairs Are for Sale
Naming Rights
The civic hall's roof leaks so badly that the choir sings under umbrellas, and there's no money to fix it. When Tetsu learns about naming rights, he sets out to sell names for everything that doesn't have one — stairs, toilets, benches, the lot.
Ep. 6
nasiAI: No Reasons Given
Budget Diversion
Tetsu has been making AI write even his excuses for being late, and City Hall calls him out for the bill. He learns about Jev, an AI that writes no text and only returns judgments, and wants it to sort the pile of unanswered inquiries. There is no budget to run it, so he eyes an empty room and an untouched line in the budget.
Ep. 5
A Hundred Thousand, on Paper
The Blue Return
At tax time, an old pear farmer hauls in forty years of handwritten ledgers. From next year, filing on paper cuts the deduction to a hundred thousand yen — and Tetsu smells a business in going digital.
Ep. 4
We’ll Invent a Local Specialty
Regional Collective Trademark
Demi-katsu rice bowls, shrimp-meshi, barazushi. Envious of Okayama's local food, Tetsu builds a Nashigasaka specialty out of pears nobody wanted — and files for a trademark to cash in twice.
Ep. 3
We’ll Take the Problem Home
Issue Potluck
The unit visits a startup cafe in Okayama, where everyone brings a problem to the table. Tetsu turns out to be unexpectedly good at this — which is exactly what worries everyone.
Ep. 2
I Am the Thank-You Gift
The 30% Wall
Nashigasaka's hometown-tax gifts are all pears, so donations only come in two months a year. When Tetsu hears the top cities pull in over ten billion yen annually, he pulls an all-nighter over the national rules, hunting for a loophole.
Ep. 1
The Gym That Vanished in Seconds
Reservation War at Midnight
A new team leader and a complaint nobody has solved in six months both land in the basement on the same morning. Not a single slot at the civic gym can be booked — and Tetsu smells money in it.

Announcement image for City Hall Bug!: now serialized on Niconico Manga and pixiv, chapters 1–10 free.

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The series is now also running on Niconico Manga and pixiv (Japanese). Read it there with comments and bookmarks.

Set one floor below City Hall

Welcome to the Special Trends Unit

In the basement of Nashigasaka City Hall sits a unit with no budget and no authority. Every time a citizen’s problem lands there, Tetsu Genda — a civil servant who thinks about nothing but money and naps — smells profit and starts moving.

His methods are mostly outrageous. And yet the problems keep getting solved.

About 5 minutes eachEvery chapter stands alone. Start anywhere.
Laugh, learn one thingHow public rules actually work, delivered inside the chaos.
FreeNo account, no login.

Four difficult people

The team downstairs

Lead · staff

Tetsu Genda38

“This... this could be money!”

Driven entirely by cash and the urge to slack off. When he smells a profit he can learn any rule or any technology overnight. Helping people is a side effect.
Team leader · Tetsu’s boss

Rena Akamine

“Tetsu. Is that actually legal?”

Logical, sharp, and the only person who tries to stop Tetsu. She is usually right, and usually one step too late.
High-school part-timer

Shota Suzuki16

“If it pays, I’ll do it. No overtime.”

Does the math before he does anything. He joins Tetsu’s schemes strictly by the numbers — and his refusal to work late is backed by actual labor law.
Section chief

Go Gotokuji46

“Genda. ...I mean, Mr. Genda.”

Never raises his voice. The angrier he gets, the more polite he becomes, and the brighter his glasses shine. If he calls you “Mr.”, run.

Chapters online

PHP2Shell? Just Shut It All Down!!

The Basement Strikes Back

AI? Already Installed

Nashigasaka's Own

The Underground Vault Is Open

One Hundred Numbing Grams

The New Guy Throws Out the Paper

Wrongly Accused

A Change of Kimono, for a Hundred

Everyone Is the Section Chief

These Stairs Are for Sale

nasiAI: No Reasons Given

A Hundred Thousand, on Paper

We’ll Invent a Local Specialty

We’ll Take the Problem Home

I Am the Thank-You Gift

The Gym That Vanished in Seconds

Release schedule

Read it elsewhere, too

Welcome to the Special Trends Unit

The team downstairs

Tetsu Genda38

Rena Akamine

Shota Suzuki16

Go Gotokuji46