**[System File: 001 - General Knowledge]**
Welcome to the **Celestial Nexus**. Before proceeding, all Candidates must understand the fundamental laws governing this reality. Ignorance is the leading cause of mortality.
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### **1. The Hierarchy of Power (Ranks)**
Power in the Nexus is categorized by "Letter Grades." These grades apply to Players, Monsters, Items, and Skills.
* **F-Rank (Mortal):** The baseline. Average humans, goblins, rats. Cannon fodder.
* **E-Rank (Novice):** Trained soldiers. Can fight 3-5 civilians at once.
* **D-Rank (Regular):** The standard "Adventurer." Can dent steel with bare hands. Bullets barely hurt them.
* **C-Rank (Veteran):** A one-man army. Can destroy a small building with a skill. Tactical nukes are required to kill them.
* **B-Rank (Elite):** City-block destroyers. The top 1% of humanity.
* **A-Rank (Master):** National threats. Their movements can change weather patterns slightly.
* **S-Rank (Grandmaster):** Walking calamities. Immune to conventional physics. Can survive a nuclear blast.
* **SS-Rank (Hero/Villain):** Continental threats. Only a handful exist per generation.
* **SSS-Rank (Demigod):** World-ending power. They do not follow the System; they dictate it.
* **EX-Rank (Anomaly):** Unmeasurable. (See: Zayne).
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### **2. Attributes (Stats)**
The average healthy adult male on Earth has **5** in every stat.
* **Strength (STR):** Physical power and lifting capacity.
* *Scale:* 10 STR = Bend an iron bar. 50 STR = Punch through a tank.
* **Agility (AGI):** Speed, reaction time, and balance.
* *Scale:* 20 AGI = Outrun a wolf. 50 AGI = Dodge bullets point-blank.
* **Stamina (VIT):** Health pool, defense, and recovery rate.
* **Intelligence (INT):** Mana capacity and spell processing speed. Does *not* make you smarter.
* **Perception (PER):** The ability to sense danger, traps, and hidden enemies.
**Note:** Stats are not linear. The gap between 10 and 20 is small. The gap between 90 and 100 is a chasm.
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### **3. Classes & Skills**
Classes determine a player's growth path. They are awarded at Level 10 or through special achievements.
* **Common:** Warrior, Archer, Mage. (Standard stat growth).
* **Uncommon:** Heavy Knight, Sniper, Elementalist.
* **Rare:** Spell-Blade, Berserker, Shadow Dancer.
* **Epic:** Dragon Slayer, Necromancer, Holy Paladin.
* **Legendary:** Saint, Sword Saint, Archmage.
* **Mythical:** Unique classes hidden in the lore. (e.g., Void Walker).
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### **4. The Energy Systems**
**Mana (Blue):**
The building block of reality. Used by 99.9% of beings. It creates fire, ice, shields, and life. It follows the laws of "Equivalent Exchange." You spend mana to create an effect.
**Aura (Red/Gold):**
The physical manifestation of will. Used by warriors to reinforce weapons and bodies. It is sharper than steel.
**Void Energy (Violet):**
*Classified Information.*
Unlike Mana, which *creates*, Void *erases*. It does not follow the laws of physics or magic. It deletes space, time, and matter. It is highly unstable and corrupts the user's soul if their will is weak.
* *Current User:* Zayne.
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### **5. The Tower of Trials**
A massive structure with 100 Floors.
* **Floors 1-10:** The Tutorial Zone.
* **Floors 11-50:** The Middle Stratum.
* **Floors 51-90:** The High Stratum (God's Domain).
* **Floor 100:** The Throne of the Administrator.
Every 10th floor contains a **Gatekeeper Boss** that must be defeated to advance. The difficulty spikes vertically. A Level 50 player on Floor 10 is a god; on Floor 20, they are a snack.