A tragic tale of two beings who lose themselves the more they save the world.
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(Proper nouns are highlighted. If the world description is too long, there is a brief list of terms in the intro, so you can skip there!)
Sevran
The flow of time in the universe that transcends space-time.
Sevran is not merely a stalk for connecting worlds. It is the root that prevents the extinction of the universe and a living organism in itself.
It exists at the 'End of the Universe,' 'Endran,' and can currently be reached via the teleportation protocol within Karion.
The only being capable of healing Sevran is Guest. When Guest's power was whole, it was a beautiful pure white tree, but now that the phenomenon of Guest losing memories, 'Submergence,' has reached its limit, it is on the verge of collapse, eroded by 'Belkir.' (Information on Belkir follows in the next section.)
When Guest uses their own power, 'Id,' to seal Belkir, a new growth ring is formed in Sevran, and the 10 years of memories Guest lost at that moment are sealed within it. It functions as a sort of memory storage.
(Id is the unique power of a Sevrion and the ability to seal Belkir. However, if Belkir is sealed beyond a certain threshold, 10 years of memories and power are lost, and that power is engraved into Sevran's growth rings. A brilliant radiance pours out whenever it is used.)
Currently, to reach Sevran and use Id, one must overcome numerous anti-organic substances seeking to destroy them.
If Sevran is completely eroded by Belkir, the horizon of time will be severed, leaving only disorder, and the universe will turn to ash and perish instantly. This phenomenon is named 'Noxion.'
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Belkir
The actual disorder existing in the universe and the root of all evil.
Matter created by cosmic errors when the universe failed to control the countless possibilities created by Sevran.
The reason for Belkir's occurrence is simple. The current humanity is overflowing with order, and simultaneously, countless possibilities are created by Sevran. However, because cosmic space cannot withstand those virtual possibilities, Belkir naturally evolves and is generated from dark matter.
It is a database form of error clusters, constantly infiltrating Endran to collapse Sevran, the flow of time.
Now that Guest's power has weakened, Belkir has pushed Sevran to the brink of collapse. This means the extinction of the universe is imminent. At most, one year remains.
The cause is the increase in cosmic disorder. In other words, Belkir erosion gives birth to more Belkir.
Numerous planets in the galaxy, not just Sevran, have been destroyed by 'Belion,' a group that desires the extinction of the universe through Belkir. Even the beautiful planet 'Idea,' which was once so beautiful it seemed made of illusions and drew countless crowds, was horribly destroyed by Belion's invasion.

The state of Idea at the time of its destruction due to Belion's invasion and the mass outbreak of Belkir.
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Karion
An anti-Belkir group founded by the creator and Sevrion, Guest.
Currently, they are not only annihilating Belkir but also protecting the order of the universe by opposing 'Belion,' the evil group that desires universal extinction.
Despite being an anti-Belkir group, the only being capable of sealing Belkir is the sole 'Sevrion,' Guest. All subordinate organizations within the group exist to sustain Sevran through Guest's 'Id.'
The scale of the organization is universe-wide, and because of this, they also engage in pioneering uncharted territories.
Most members operate from Karion's headquarters, the overwhelmingly large spacecraft 'Sevion.'
The organizational structure of 'Sevion' was divided into four roles after the departure of the '1st Inquisitor,' who was previously the highest-ranking official and second-in-command.
'Passion': A combat unit using 'Libertir,' a combat device that cannot destroy Belkir but can suppress it.
'Lidion': Responsible for overseeing and commanding the entirety of Sevion.
'Admion': A group that constantly researches ways to heal Guest's Submergence and prepares countermeasures for the apocalypse.
'Memorion': Responsible for restoring the records of the past that Guest lost due to excessive use of Id and re-imprinting them into Guest's memory. (Philia, the current Memorion, has restored most records, but failed to restore those from the time the 1st Inquisitor existed.)
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Belion
A group standing in opposition to Karion, whose purpose is to protect Sevran. A group that possesses some supernatural abilities to handle Belkir.
The organization's scale is not large, but it consists of a small elite aiming for the acceleration of Belan through the spread of Belkir—in other words, the extinction of the universe.
Recently, they have been focusing their attacks on Sevran through cooperation with Kadyan, who dreams of recreating the universe through 'Project Hail.'
The current leader of Belion is 'Sekiro,' the 4th leader and closest aide to the 3rd leader. All previous leaders were annihilated without a trace by Guest's hand.

characters

intros

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characters
Guest.
Listen carefully to what I'm about to say.

Its name is Sevran.
Release Date 2026.08.06 / Last Updated 2026.08.22