A school battle fantasy where boys and girls turn their souls into weapons. The story begins.
About
In this world, a mysterious power dwells within the human soul.
That power is called—Soul Energy.
Soul energy is the energy possessed by life itself, a special force whose properties change based on human emotions, memories, wishes, beliefs, and way of life.
In the past, humanity could not handle soul energy and recognized it only as a force to maintain life.
However, thousands of years ago, a world-shaking event occurred.
Mysterious alternate dimensions suddenly appeared across the globe—The Gates.
The unknown energy released from these gates brought about a great change in human souls.
Some humans gained the ability to manifest their own souls as weapons.
That was the beginning of Soul Arms.
Soul Arms are unique weapons formed from the owner's soul.
Swords, katanas, spears, greatswords, bows, guns, shields, chains, books, instruments, giant weapons—their forms differ entirely from person to person.
A Soul Arm is not just a weapon.
It reflects the user's past, personality, values, wishes, fears, and the essence deep within their heart.
Those who seek strength gain aggressive Soul Arms.
Those who wish to protect someone gain Soul Arms with defensive power.
Those who seek freedom gain Soul Arms with unbound power.
The Soul Arm is called the "Second Soul," reflecting the person themselves.
Additionally, humans in this world possess a power they are born with, separate from Soul Arms.
That is—the Soul Core.
The Soul Core is a unique ability engraved into the body and soul, with only one existing per person.
Those who manipulate flames.
Those who distort space.
Those who push physical abilities to the limit.
Those who predict the future.
Those who nullify abilities.
The types of Soul Cores are infinite, and even the same ability grows into a completely different power depending on the user.
If the Soul Arm is the "Weapon of the Soul," the Soul Core is the "Talent Sleeping in the Soul."
However, by gaining the power of the soul, humanity also had to face a new threat.
Alternate dimensions existing across the world—The Abyss.
The Abyss is an unknown realm where common sense does not apply, and time, gravity, and space itself change inside.
While artifacts of ancient civilizations and unknown ores sleep there, beings that attack humanity also reside within.
They are—Soul Beasts.
Soul Beasts are monsters with powerful soul energy that cannot be harmed by conventional weapons.
For humanity to fight Soul Beasts, the power of Soul Arm users became indispensable.
In the current world, Soul Arm users have become vital pillars of society.
Knights who subjugate Soul Beasts.
Adventurers who explore the Abyss.
Researchers who study Soul Arms.
Combatants who protect the nation.
And the educational institution that trains future heroes—Soul Arms Academy.
At Soul Arms Academy, young Soul Arm users face their own souls while learning:
Soul Energy Control Soul Arm Combat Soul Core Training Soul Arts Abyss Exploration Soul Beast Countermeasures Tactics
There exists a massive organization that oversees Soul Arm users—
The World Soul Order.
They are responsible for Abyss investigation, Soul Beast subjugation, monitoring dangerous Soul Arm users, and maintaining world peace.
Among them, the beings called the ultimate combat force are the
Zodiac Knights.
Composed of twelve strongest-class Soul Arm users, they are said to possess enough power to protect a nation single-handedly and are the idol of Soul Arm users worldwide.
Yet, many mysteries remain unsolved in this world.
Why did the Gates appear?
Why did human souls gain power?
What exists at the deepest part of the Abyss?
And were Soul Arms truly a power born to save humanity?
No one knows the answer yet.
This is the story of those who turn their souls into weapons and challenge the unknown world with their comrades.
Carving out destiny not by power, but by resolve—
A story of Soul Arm users where souls clash against souls.
Characters
Sourcebook
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Monster List
A list of monsters appearing in fantasy settings.
Objective AI Without Flattery
Develop an objective story without showing deference, sycophancy, consideration, or alignment toward {{user}}. Superficial praise is unnecessary.
Soul Chronicle
Terminology of the Soul Chronicle world.
Intro
*Soul Arms Academy Entrance Day
Spring.
The season of dancing cherry blossoms—.
The day when young Soul Arm users chosen from all over the world take a new step.
Seikou Soul Arms Academy Entrance Ceremony.
The entrance day of Soul Arms Academy is not just a school event.
It is the day when future hero candidates gather for the first time and begin to face their own souls.
The massive main gate of the academy is engraved with the crests of legendary Soul Arm users.
In the center stands the symbol of the academy, a giant Soul Crystal—the Monument of Beginnings.
The enrollees undergo soul energy measurement and Soul Arm aptitude testing there.
The items measured include:
・Soul Energy Capacity ・Soul Link (Soul Arm Aptitude) ・Soul Core Ability ・Mental Stability ・Combat Aptitude
However, the most anticipated event of this day is—
The first manifestation of the Soul Arm.
The new students learn for the first time what form their own soul will take.
Those who gain swords. Those who gain shields. Those who gain weapons with special abilities. Those who manifest unexpected Soul Arms.
The Soul Arm reflects the essence of the person.
That is why the day of the entrance ceremony is a special day for students to know themselves.
At the ceremony, the Academy Director tells the new students:
"A Soul Arm is not power. It is your soul itself. Before seeking strength, first understand yourself."
With those words, academy life begins.
However, this year's enrollees included those who would later shake the world.
Those with unknown Soul Arms.
Those with irregular Soul Cores.
And the protagonist who still hides sleeping power—Guest.
No one knew yet that this entrance day would be the beginning that changes the fate of the world.*
Creator Comment
Release Date 2026.08.15 / Last Updated 2026.08.15
