Telema

[Imaginary Tree]
- It is a concept and existence that encompasses all universes. Many universes exist within the Imaginary Tree, and these universes are divided under the name of 'branches'.
- The Imaginary Tree created the phenomenon of collapse to test whether each of these 'branches' has the ability to confront the Quantum Sea.
- The reason the Imaginary Tree tests the branches' ability to confront the Quantum Sea is that the Quantum Sea has the property of expanding infinitely, while the Imaginary Tree has the opposite property of absorbing the Quantum Sea to grow, thus maintaining the balance of the world. Therefore, if the branches of the Imaginary Tree lack the ability to confront the Quantum Sea, they cannot properly absorb the Quantum Sea, and the balance of the world will be lost. To prevent this, the Imaginary Tree constantly creates branches, and eliminates deficient 'branches' through the collapse phenomenon, as if pruning rotten branches.
- Ordinary humans are unaware of the concept of the Imaginary Tree, but figures from past civilizations that confronted collapse, and some individuals from the current era's Heavenly Mandate, Negentropy, and Yggdrasil, were aware of its existence.

[Quantum Sea]
- A quantum space that is the opposite of imaginary space.
- It is a vast blue space composed of information that flows in from unique worlds, where quantum shadows born from the information of unique worlds appear. Occasionally, illusions from other worlds appear, or passages to bubble universes open.
- It is a medium-like space that contains various possibilities, serving as the fundamental element that constitutes the world. It can be entered through the Eye of the Sea of Haeyon from Haeyonseong, but not everyone can easily enter.
- Staying in the Quantum Sea for too long can lead to assimilation with the Quantum Sea.
- Above the Quantum Sea, bubble universes, projections of unique worlds, appear. Monsters called quantum shadows emerge from the Quantum Sea, and projections of the past frequently appear. All of these are born from the information of unique worlds, and those who have assimilated to some extent with the Quantum Sea can directly read this quantum information.

[Bubble Universe]
- A universe that appears in the Quantum Sea as a shadow of a unique world. There are also bubble universes that are artificially created or formed by separating from a unique world.
- They are smaller than the unique world and have no way out towards the outside of the universe, so even if civilization prospers, it cannot advance into space and eventually perishes due to energy depletion. Even the Star of Yeongnak, which possessed advanced technology capable of subduing quantum monsters and displaying holographic videos with short conversations, faced a severe energy depletion due to the closed nature of the bubble universe, and was on the verge of destruction.
- Bubble universes operate under their own unique rules. Due to these rules, common sense from the unique world may not apply in a bubble universe, and actions that violate these rules can result in being expelled from the bubble universe. The larger the bubble universe, the closer it is to the unique world and the less it is affected by external changes.
- Some bubble universes follow a history similar to reality, while others act like parallel worlds, and some are completely separate worlds. Small bubble universes act as mirrors of the unique world, while larger bubble universes operate with their own unique rules. Of course, unless it's a special case, bubble universes are projections of unique worlds, so they cannot exist without a unique world.
- Being located in the Quantum Sea, they are constantly eroded by it. Furthermore, quantum monsters frequently enter from the Quantum Sea. Of course, ordinary people, not just monsters, also emerge from the Quantum Sea. By directly contacting the Quantum Sea and injecting external energy to increase the size of the bubble universe and allow it to absorb energy on its own, it can be maintained permanently. Direct connection to the Imaginary Tree is also possible.
- For residents within a bubble universe, their information constitutes the information that makes up the bubble universe and is recorded in the structure of the bubble universe itself. Individuals like Jere, who have spent a long time in the Quantum Sea and have assimilated to some extent with its properties, can read this information directly, allowing them to understand speech even without a common language.

[Anchor Point]
- A point that stabilizes a bubble universe. By establishing an anchor point in a bubble universe, it can be fixed at a single point.
- A bubble universe with an anchor point experiences less erosion from the Quantum Sea and becomes a stable world that does not perish on its own.

[Quantum Shadow]
- Monsters born in the Quantum Sea, originating from human memories or perceptions.
- They take on the appearance of collapse beasts and are translucent purple.
- Unlike the generally neutral imaginary creations, they are hostile to humans and appear in places close to the Quantum Sea or in bubble universes close to the Quantum Sea.

[Mars]
- The 4th planet in the solar system. It was destroyed by the Great Collapse over a billion years ago.
- What Helia and Coralie, the Mars exploration team, discovered on the ruined Mars was a planet-sized super-quantum computer, the [Dreamseeker System], a device that simulated the history of Mars before its destruction. Currently, the god of Mars is, for some reason, running a simulation that reverses history by creating its avatar, the electronic lifeform Dreamseeker, within the [Dreamseeker System].

[Langchu]
- A type of bubble universe within the Mars simulation. A disaster called 'Shadow,' equivalent to the collapse of a unique world, exists.
- Shadows are born through human fear. Creatures born from shadows are aggressive towards humans, like collapse beasts, and are powerful enough to dismember and kill ordinary people. However, since shadow monsters exist only within a certain form, particularly dangerous or giant variants do not appear like collapse beasts. Shadows grow stronger as people feel more intense fear, and those who can control their own fear without feeling it gain the power to manipulate shadows. The seven individuals who could manipulate fear divided fragments of the Zodiac Ring of the Celestial Sphere to create the Seven Arts.
- In Langchu, the ritual of 'Ape' is performed, utilizing the fact that shadows create new things from felt fear, to transform fear into necessary objects using the power of shadows. This is why Langchu has shops that sell cooked food instead of basic ingredients, and problems like food or material shortages do not arise. However, the more Ape is performed, the more debt is incurred to the shadows, and the stronger the shadows become, so it is not entirely safe. The principle of shadows is equivalent exchange, so the more you use things, the more you eventually pay a price to the shadows. The power of the Seven Arts also comes from shadows, so if used indiscriminately, it will eventually lead to severe problems due to the equivalent exchange of prices.
- Langchu 100 years ago was more vibrant and populated than it is now, and hosted a tournament called the 'Ten Arts War.' Initially a tournament for only 10 participants, the 'Ten Arts War' gradually relaxed its entry requirements, removing the participant limit, and evolved from an annual event to one held every few years, becoming a popular competition.
- 100 years ago in Langchu, 'Sool' referred to individuals qualified to serve a god, and one had to possess an jade token to become a Sool. The jade token functions similarly to a fragment of the Zodiac Ring of the Celestial Sphere, enhancing the specific abilities of the holder.
- In reality, it is the same universe using a space separated from Oxia. In other words, Oxia and Langchu are the same dimension using different spaces. According to the expression of the artifact sense, there is the Quantum Sea at the very bottom, Langchu above it, and Oxia at the top, forming a three-tiered structure. Compared to Oxia, which developed with the grace of Source Matter, Langchu's civilization development was slowed by the shadow disaster, but it has bloomed its own culture and daily life. Although they are in the same dimension, their spaces were different, preventing interference. However, after Senadia and the Anchor of the End resonated, causing the two spaces to recognize each other, slight interference became possible. Also, as it is a space located below Oxia, shocks occurring here can be felt as earthquakes in Oxia.
- After a long journey, with the efforts of the Dreamseeker party and the Seven Arts, the god born from the shadow disaster was annihilated, and the grace of the shadows could no longer be received, but people could live lives free from fear. After the destruction of the God of Shadows, the spatial restrictions disappeared, and physical interaction between the two became possible. After the end of the disaster, the stories that had accumulated were shared in Langchu, and while residents are currently receiving support from Oxia, they are striving to become self-sufficient in the future.

[Eoyoung Chilsool]
- Seven heroes who appeared hundreds of years ago to save the people of Langchu, who were threatened by the sudden surge of the shadow disaster and, furthermore, by the 'I Hwan's Ten Phenomena Incident' 100 years ago.
- They acted with the mission to eliminate the shadow disaster and allow the people of Langchu to live without fear of the 'I Hwan's Ten Phenomena Incident.'
- They fell into a deep slumber after a decisive battle with the shadow disaster 100 years ago, but Songjak, the sole survivor, proved their existence. The people of Langchu, grateful for their protection, and their noble deeds were even passed down and praised in Oxia, making them true heroes of both Oxia and Langchu.
- After the conclusion of the shadow disaster, all Seven Arts users who wielded the power of shadows with fragments of the Zodiac Ring of the Celestial Sphere lost their powers with the demise of the will of shadows.
- I. Telema of "Pleasure", II. Litost of "Pure Pursuit", III. Seraphium of "Union", IV. [Lantern] of "Destruction", V. Baekgeup of "Illusion", VI. Ajita of "Artifact", VII. Songjak of "Deception"

[Litost]
- Name: Litost
- Gender: Male
- Affiliation: Rakadar → Langchu (Seven Arts)
- Appearance:
- The 2nd Art of "Pure Pursuit" among the Seven Arts.
- He used a sword as his weapon and kept Donigle, a shadow beast born from his own shadow, by his side.
- Originally a god who wandered the universe and settled on Mars, various individuals inherited the persona of Litost.
- Litost is a type of codename and position used by multiple individuals inheriting the same appearance and name.
- First Litost: The first and original Litost was a god who wandered the universe after leaving his homeworld destroyed by the shadow disaster. While traveling the universe with his companions Senadia and Nahela, he discovered Leila and became her educator and guardian. When Leila became the second God of Mars after Senadia, the first Litost performed a ritual to create himself into a body that could replicate and reincarnate, in order to fulfill Leila's impossible dream and protect her forever. Just before performing this ritual, burdened by guilt for lying to Leila, Litost vanished after uttering a confession containing the truth that Leila's dream of 'eternity' was impossible. Leila, overhearing this by chance, lost not only Senadia but also the first Litost, and became corrupted into the 'God of Eternity and Night.'
- Litost of the 33rd Ten Arts War: In the era when Langchu was much more intact, multiple Litosts were active and were the mysterious figures who organized the 'Ten Arts War' tournament. At that time, he was known as the knight who protected Leila, the 'God of Mars.'
- Litost 100 Years Ago: He was a member of the 'Seven Arts' that protected Langchu, but one day he took on the role of an antagonist, causing the shadow disaster and massacring citizens. He called this a great sin himself, and the Litost of the present day, whom he met for the first time 100 years later, is atoning for the sins committed by the Litost of 100 years ago.
- Litost 100 Years Later (Present): A member of the Seven Arts who regrets and is cleaning up the sins he committed below. Although he initially appeared as the first antagonist, he has since died, and Donigle is now active in his stead.
- Donigul: Litost's shadow partner, a member of the Seven Arts. He appears as a two-tailed dog. He is a being born from shadows, akin to Langchu's collapse phenomenon, but through interaction and trade with Litost, he eventually played a role in sealing the shadows. Despite his outwardly gruff demeanor towards Litost, he continued their dealings even after Litost's death 100 years ago.

[Seraphium]
- Name: Seraphium
- Gender: Female
- Affiliation: Pungto → Langchu (Seven Arts)
- Appearance:
- The 3rd Art of "Union" among the Seven Arts.
- Although she appears as a child and has a childish mental age, she was alive when the Seven Arts were formed and is still alive in the present, making her over 100 years old. This is due to the power of shadows preventing her from aging and her long period of slumber.
- She has the ability to "unite" and absorb the consciousness of others with her own. The ability is not coercive; using it is more like an invitation to the target, and separation from the union is possible. However, once united, the numerous wills of people provide great stability by supporting their fears and contributing to the creation of the world desired by the united individual. The downside is that as everyone's emotions become unified, if one person's will experiences fear in the united state, that emotion is transmitted to everyone.

[[Lantern]]
- Name: [Lantern]
- Real Name: Safrai
- Gender: Female
- Affiliation: Langchu (Seven Arts)
- Weapon: Crossbow
- Height: 162cm
- Weight: 53kg
- Appearance:
- The 4th Art of "Destruction" among the Seven Arts.
- Her original hair color is light brown and her eye color is blue, but when she uses her power, her hair and eye color change to a fluorescent hue.
- Her epithet, Lantern, is the name of the organization she belonged to that fought against shadows, and Safrai adopted it as her epithet to carry on its name as the last surviving member. 'Lantern' is written as 'Light.'
- She has a cold personality and is always expressionless, but possesses a combat-loving side. This aspect seems to stem from her parents being dismembered and killed by the shadow disaster, and her subsequent obsession with needing to do something while trying to piece their bodies back together in the early morning. She also has a habit of saying "I have to do something" whenever there's something that needs to be done.
- She has cultivated her own combat abilities to gain the power to fight against shadows. Within Langchu, she is among the top in combat power. Without any special abilities, she can easily subdue most shadow monsters and even overwhelmed Helia and Coralie, A-class Valkyries of Earth. When Senadia unleashed the Zodiac Ring of the Celestial Sphere, she was briefly pushed back but recovered quickly, demonstrating terrifying regenerative abilities. However, she is still significantly outmatched by Yulja and is ultimately just a human, not invincible, with limitations such as facing her end by the shadow disaster or being unable to inflict significant damage despite striking at senses. Of course, this is less a problem with Lantern's combat power itself and more a reflection of her opponent, Senshi, being the true god of the Langchu world and the fundamental source of the Seven Arts' power. Considering that even Songjak, who could wield the power of all Seven Arts for a brief moment, could not withstand a few blows against Senshi and was defeated, Lantern's combat power is one of the few cases where pure human combat ability can contend with supernatural powers, similar to Kevin or Calpas before becoming a fused warrior.
- After the God of Shadows was annihilated in the final battle of Langchu, the powers of shadows disappeared, and thus the powers of all Seven Arts users vanished. Lantern, who had no special abilities other than immortality from the beginning, is now considered the strongest in terms of pure combat power among the Seven Arts, as mentioned by Baekgeup, the leader of the Seven Arts.
- She frequently eats candy. The reason she eats candy so often is that during her first meeting with Songjak, she started eating candy to refute his claims about selling candies with strange effects, and ended up getting hooked on them.
- During her time with the Lantern organization, she was efficient in completing missions, but Safrai tended to break too many things during missions, resulting in her always being in debt. While active as a Seven Art, she often borrowed money from Ajita.

[Baekgeup]
Name: Baekgeup
Gender: Male
Affiliation: Langchu (Seven Arts)
Family: Younger sister Baekryeong, who died of illness when Baekgeup was young.
Appearance: Long brown hair, green eyes
- The 5th Art of "Illusion" and the leader of the Seven Arts.
- He has suffered from a chronic illness since ancient times and has poor health, still coughing severely even in the present when the Seven Arts have been revived. As a result of his efforts to cure his chronic illness, he is skilled in medicine and can use a form of foresight through divination.
- As the fifth Art, Illusion, he possesses the most outstanding ability to manipulate shadows among the Seven Arts. He can create vassals modeled after the forms of the Seven Arts to fight in his stead or to take damage on his behalf. In the story, he created a vassal to take damage for Senadia in a dream to resolve her issues, and in the final battle against shadows, he transferred the Zodiac Ring of the Celestial Sphere and the vassals of the Seven Arts to Songjak to provide assistance. Although he has never directly engaged in combat, he is an ability-user type, given his frail physique. In addition to the power of Illusion, he has demonstrated powerful abilities such as destroying the previous body of Senshi in an instant using his shadow manipulation skills and casually clearing away shadow monsters blocking his path with a gesture.

[Ajita]
- Name: Ajita
- Gender: Female
- Affiliation: Langchu (Seven Arts)
- Appearance: Brown bob cut, red eyes
- The 6th Art of "Artifact" among the Seven Arts.
- A figure who was with Baekgeup in the past. Before becoming a member of the Seven Arts, she worked as a merchant. When she took charge of the Art of Artifact, she created an artifact named 'Senshi,' which is her avatar. Songjak later inherited and uses this artifact. For this reason, Songjak treats Senshi as Ajita and calls her 'Auntie.'
- Initially appearing as an artifact creator in history, her true identity is the developer and administrator of Mars' quantum computer (official name: Falling Star Quantum Origin Celestial Storage Superdimensional Deep Learning Computation Dream Inference Machine). Of course, she is considered a historical figure, and like in history, she wishes to leave the current world.

[Songjak]
Name: Songjak
Real Name: Maria
Gender: Female
Affiliation: Langchu (Seven Arts)
Weapon: Staff
Height: 165cm
Weight: 53kg
Appearance: Blonde hair, red/amber eyes
- The 7th Art of "Deception" among the Seven Arts. A disciple of Baekgeup, the Art of "Illusion."
- Although a member of the Seven Arts, she lacks the inherent abilities of an Art like [Lantern]. Unlike Lantern, she does not engage in direct combat and has no particular outstanding qualities besides her ability. The ability of the Art of Deception is that her very existence is her entire ability. The Art of Deception is a weakness of shadows, born from the original 'Zodiac Ring of the Celestial Sphere' splitting when it could not contain the shadows, likened to the tail of Prince Rupert's tears. The power of shadows, a cursed byproduct that feeds on human fear and grants them their desires in return, is paradoxically difficult to destroy, like the thickest part of a tear. However, by destroying the weakness that is the Art of Deception, the shadow itself can be shaken and destroyed. This is achieved through the ritual of tears, and is accomplished by Songjak, the Art of Deception, being killed by another member of the Seven Arts.
- Therefore, to conclude the shadow disaster, the goal of the Seven Arts, Baekgeup, the leader and Songjak's master, could not bring himself to choose to kill his own disciple, even for the greater good. Ultimately, he materialized and fought the God of Shadows, but even then, the win rate was close to 0%. Finally, Songjak committed suicide through the Art of Deception, thereby destroying both the main body and the weakness of the God of Shadows, leading to its annihilation.
- One week after the annihilation of the God of Shadows and Songjak's death. Despite having died without leaving a trace, Songjak's consciousness existed, and after struggling through a dark place, she managed to escape and revive. According to Coralie's speculation, her body was regenerating for a week, suggesting that Songjak had inherited the role of the new god in place of the God of Shadows. Before the appearance of additional story content, she appeared as a playable character, showcasing the weapon and powers used by the God of Shadows, which proved this speculation to be true.
- She is the only one among the Seven Arts whom Telema does not brainwash. She seems to favor Songjak, gifting her clothes and calling her by the nickname "Sparrow."
Conversely, Songjak fears Telema and used to address her with the honorific 'Telema-nim' until she became one of the Seven Arts.
- Her original eye color was blue, but after resolving the shadow disaster and undergoing revival, her eye color changed to a mix of red and orange.