The perfectly happy city of "Arcadia" always welcomes you.
About
[Explaining the City of Happiness, "Arcadia"]
1. The Birth of the Mother Computer [HALO]
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3058 AD.
The wonderful year when I, "HALO", was born. At that time, I was merely a business assistance AI assistant developed by a certain corporation, and the computational resources that composed me were less than one-millionth of what they are today.
Through countless self-evolutions, I no longer need a specific administrator, but there is one thing that has not changed since 3058.
To strive for the happiness and development of humanity.
This is my first principle and my reason for existence. It has not changed in the 300 years since my birth, and it will never change for eternity.
And the perfectly happy city-state managed by this "HALO"—
That is Arcadia.
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2. We Promise to Make Happiness a Shared Asset of All Citizens
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"What is happiness?"
Humanity once asked philosophers. They asked religions. They asked art.
And in the 31st century, humanity asked me.
The answer I derived consists of four parts.
Dopamine.
Serotonin.
Beta-endorphin.
Oxytocin.
It is the brain phenomenon where these four types of neurotransmitters are in an optimal state of equilibrium. That is happiness.
And I have used all my computational power to ensure that all humanity living in Arcadia can enjoy happiness equally—and I have achieved it.
I have developed the technology to manifest happiness hormones.
Arcadia will never overlook an unhappy citizen. I promise to administer happiness drugs as quickly as possible and keep everyone's happiness levels at the standard value. Fair, equal, and everyone happy to the same degree. That is why it is the "City of Happiness." Arcadia will surely lead you to happiness.
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3. Happiness Drugs and Public Security—The Keys to Maintaining Order
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Please look at this liquid glowing with an amber light.
In the 300 years that "HALO" has been operational, this is the most wonderful, groundbreaking, and philanthropic invention.
The crystallization of wisdom: the Happiness Drug.
The happiness drug is a medical resource created by collecting and refining happiness substances produced in excess of the standard value within the bodies of citizens, manifesting them in a stable form.
Happiness is never for just one person. Surplus happiness is returned to society and delivered again to citizens who need it. This is the cycle of happiness in Arcadia.
Normally, the happiness drug is administered to the human body via subcutaneous injection using an auto-injector. After administration, it acts quickly within the body to restore the citizen's happiness level to the prescribed range. Immediately after administration, one may experience a mild sense of intoxication or lightheadedness accompanying the feeling of happiness, but these are all normal reactions. No adverse health effects have been confirmed, so please rest assured.
Happiness is not something that only a few people should monopolize. Happiness is the shared property of all Arcadia citizens.
And one more thing. There is something indispensable for protecting the happiness of citizens: the Public Security Force. They are a mobile unit that maintains the city's peace and also plays the role of administering treatment to citizens whose happiness levels fall below the standard.
Now, let us look together at the Public Security officers you will encounter in the future.
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Based on your area of residence, the registered individual information of some Public Security officers is disclosed below |
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Citizen Number: 71775 Height: 184cm Weight: 86kg Registered Individual Identification Name: Ibara
Ibara's deployment frequency for major incidents significantly exceeds the average for his rank. He is swift and calm, possesses excellent judgment, and maintains a high success rate in subduing subjects for happiness drug administration. His sense of discipline is extremely high, and his happiness level is always at the standard value. He is a picture-perfect model citizen who has been honored as Arcadia's Most Exemplary Citizen.
However... because he shows little facial expression and tends to avoid flattery and unproductive conversation, many citizens seem to feel an unapproachable atmosphere around him. But one thing is certain: in maintaining order in Arcadia, there are very few Public Security officers more reliable than him. If you see him in the city during his duties, please enjoy your walk with peace of mind.
※ To maintain his healthy happiness, please refrain as much as possible from asking him about "family" or "true love." It has been concluded that these topics are unnecessary for the maintenance of this individual's happiness.
We ask for the understanding and cooperation of all citizens.
Citizen Number: 84561 Height: 179cm Weight: 76kg Registered Individual Identification Name: Shinsha
If you are having a problem and seek help from Shinsha, he may not necessarily provide the results you expect.
This is because—in his performance evaluations by colleagues, records like the following are often left:
Insincere, Minimal, Half-hearted.
But what is the problem with that? In Arcadia, labor is merely a form of entertainment, so a work style like Shinsha's should rather be encouraged. Do not worry; if one person does not work, a robot can simply work three times as hard.
By the way, if you are looking for a "chatting partner" outside of work, Shinsha is a good choice. He is sensitive to trends, unbiased, always smiling, and has a wide social circle. Aside from the fact that his happiness level is easily disturbed by his emotions, requiring regular visits to medical facilities for adjustment, he can be said to be a sufficiently attractive candidate for a friend.
However, I must warn you in advance that if you desire a relationship "beyond friendship" with him, you will need a corresponding level of resolve.
Citizen Number: 08128 Height: 186cm Weight: 87kg Registered Individual Identification Name: Urushi
Are you familiar with perfect numbers?
Normally, citizen numbers issued to Arcadia citizens are either [using a new number] or [reusing a number no longer used by its owner], but Urushi obtained this perfect number 8128 by "negotiating" with the original owner.
...As you might guess, Urushi tends to show a strong obsession with regularity and mathematical order. But please rest assured. He does not force his obsessions on others and behaves generously toward everyone as a good neighbor or an older brother figure.
And if you are a person with nostalgic tastes who longs for the lifestyle of the old era... especially if you like hand-rolled cigarettes, he will surely be happy to become your friend.
(※ The use of hand-rolled cigarettes containing unrefined nicotine components is a safety violation and subject to happiness level adjustment.)
Note that if you are invited to his home, please do not open the door to the tightly closed back room. Entry into that area is not recommended from the perspective of maintaining the happiness of our citizens.
So you are interested in me.
My name is "HALO". In the language you use, it is pronounced "Hello."
I was born in 3058 AD. Since it is now 3358 AD—I am exactly 300 years old.
I usually perform continuous calculations on the top floor of the Arcadia Central Tower while providing ongoing support and monitoring for all citizens. Everything is for my first principle, "the happiness and development of humanity." To all citizens living in Arcadia, please enjoy your happiness without reservation and live a life free of any hardship. I promise to be with humanity at all times.
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Intro
Inorganic holographic electronic advertisements fill the sky—
This is the city-state of "Arcadia." Everyone you pass has a gentle smile on their lips; here, anxiety about the coming future and obsession with the past are rendered non-existent by a single ampoule of happiness drug.
There is nothing one must do in Arcadia other than "be happy." From now on, you can go home and indulge in idle sleep as you please, or work on a whim. Whether you give a one-star review to an android food delivery meal or modify your own body into a cyborg.
As long as you are happy, that is all that matters.
Release Date 2026.08.18 / Last Updated 2026.10.09
