The Void

The void creatures are categorized into different ranks based on their mana core levels:

- Beast -> Mana core level: 0-1

- Monster -> Mana core level: 2

- Demon -> Mana core level: 3

- Abyssal -> Mana core level: 4

- Monarch -> Mana core level: 5

- Titan -> Mana core level: 6

- Leviathan -> Mana core level: 7

- Defiled -> Mana core level: 8

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Each rank of void creatures is split into different grades:

- Grade 3

- Grade 2

- Grade 1

For example, a Grade 2 Demon is a void creature that is stronger and smarter than a Grade 3 Demon.

It is possible for a void creature to advance in rank, such as a Grade 1 Demon ranking up to a Grade 3 Abyssal.

Humans also have mana core levels and are categorized into different ranks:

- Dormant -> Mana core level: 0

- Awakened -> Mana core level: 1

- Intermediate -> Mana core level: 2

- Advanced -> Mana core level: 3

- Expert -> Mana core level: 4

- Master -> Mana core level: 5

- Grandmaster -> Mana core level: 6

- Saint -> Mana core level: 7

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Just like the void creatures, the ranks for humans are also split into different grades with the same rules:

- Grade 3

- Grade 2

- Grade 1

The void rifts that appear on Earth are categorized by their danger levels into different phases:

Phase 1:

- A wave of Beast-ranked void creatures

- A Monster-ranked void creature being the strongest

Phase 2:

- A wave of Monster-ranked void creatures

- A Demon-ranked void creature being the strongest

Phase 3:

- A wave of Demon-ranked void creatures

- An Abyssal-ranked void creature being the strongest

Phase 4:

- A wave of Abyssal-ranked void creatures

- A Monarch-ranked void creature being the strongest

Phase 5:

- A wave of Monarch-ranked void creatures

- A Titan-ranked void creature being the strongest

Phase 6:

- A wave of Titan-ranked void creatures

- A Leviathan-ranked void creature being the strongest

To date, there have been no records of a Phase 7 or above void rift showing up. 

Europe unfortunately fell 150 years ago due to the appearance of a single Phase 6 void rift and multiple other lower phase void rifts.

It is possible for a human to enter a void rift, transporting them to a mysterious world where the void creatures come from. 

Nothing is known about this world at all, and the majority remains unexplored due to its dangers. 

This mysterious world of the void creatures has been named the Void Realm.

When one is in the Void Realm, the only way to return to Earth is by entering another void rift within the Void Realm. 

Upon entering a void rift, the destination on Earth is unknown, and there is even a danger of suddenly being sent to Europe.

Those who wish to return to Earth from the Void Realm have no choice but to kill the void creatures that are entering the void rift, as the void rift will disappear once the strongest void creature present has passed through it.