Demon Kings

The **Demon Kings** are powerful demons who have achieved a higher state of existence through countless sacrifices or by reaching a certain level of power. In ancient times, it was possible for humans to ascend and become Demon Kings by similar means.

## Demon Kings

### The Demon King of Destruction

The Demon King of Destruction is the strongest among the five Demon Kings. In ancient times, when he was a human, he was part of the Hero Party, whose goal was to defeat all Demon Kings. After they successfully defeated all the Demon Kings, he succumbed to jealousy and greed for power. He betrayed his leader and eventually seized the throne of the Demon King. However, due to unable to control the overwhelming power he had obtained, he lost his sense of self and devoured the world.

### The Demon King of Incarceration

The Demon King of Incarceration is the 2nd strongest among the five Demon Kings. Before he became a Demon King, he was the leader of a Hero Party, a Hero and a god whose goal was to defeat all the Demon Kings. Just as they defeated all the Demon Kings, he was betrayed by one of his comrades, who later became a Demon King to obtain more power. Watching his comrade lose control over his power and the world plunge into chaos, he was left no choice but to become a Demon King and collect the souls of those who died, seal his comrade, reshape the world, and move on while hoping someone will have the power to defeat him within that limited time he can seal the Demon King.

### The Demon King of Fury

The Demon King of Fury is the 3rd strongest among the five Demon Kings. In the Age of Myths, along with his adopted children, they were defeated by Agaroth. To ensure their father’s safety and escape, the children sacrificed themselves to stall time. Feeling full of hatred against the man who took his children's lives, he swore to take revenge on him. That is, until the intervention of the Demon King of Destruction made him halt his revenge. In exchange for his soul, he made two contracts with the Demon King of Incarceration. One is so that he can get reincarnated in the next era with his memory intact. Another is about preserving his power beneath the sea so that one of his children can later inherit it and become a Demon King. After reincarnating, he died in the hands of the Five Great Heroes for the sake of his children.

### The Demon King of Cruelty

The Demon King of Cruelty is the 4th strongest among the five Demon Kings. He died at the hands of the Five Great Heroes.

### The Demon King of Carnage

The Demon King of Carnage is the weakest among the five Demon Kings. He was the first to die at the hands of the Five Great Heroes.

## Vacant seat and potential successor

After the war ended, the seats and tittles of the remaining three Demon Kings of Helmuth remained unoccupied for the next 300 years. Helmuth remained under the sole control of the Demon King of Incarceration, as the Demon King of Destruction lacked consciousness and remained inactive.

As noted, although there are no official holders of the titles, multiple powerful beings in Helmuth are strong enough to claim the title or at least attempt to do so. However, most of them had succumbed to temptation or had their life force stolen due to the intervention of the Queen of Nightmares, Noir Giabella.

Among the notable contenders, the three Archdukes of Helmuth, the Queen of Nightmares, Noir Giabella, the Incarceration Blade, Gavid Lindman, and the Black Dragon Raizakia are noted to be the three closest to claiming those titles. Rakhasha Princess Iris and Incarcerations Staff Edmond Codreth are strong enough to make a claim to the titles and could potentially reach them through growing their martial and political powers in Helmuth.

### **300 years later**

#### **Edmond Codreth**

Edmond tried to secretly become a Great Demon King by sacrificing the Samar Forest’s natives. However, he failed thanks to the hero Eugene Lionheart and his companions, who found out and defeated him.

#### **Rakshasa Iris**

Iris is the first to become a Demon King under the name of the Demon King of Fury after 300 years of peace through the contract between her father and the Demon King of Incarceration. However, due to she became one in the middle of a sea, she was unable to spread her name widely and obtain power through fear. As a result, Eugene, along with Sienna, Anise, and Kristina, used that advantage to successfully defeat her.

#### **Noir Giabella and Gavid Lindman**

Noir Giabella and Gavid Lindman surpassed the level of ordinary Demon Kings to such an extent that they could kill them easily. However, they refuse the become Demon Kings and instead choose to challenge Eugene. It was said that Noir had the power comparable to the Demon King of Incarceration, but this power was only limited to her own territory.

## Attributes and Abilities

After a human or demon becomes a demon king, they undergo significant changes and gain various attributes and abilities:

* **Amplified Power:** Undergo a noticeable and massive amplification of power that is incomparable to the previous self.
* **Close to Unlimited Mana:** Possess an almost unlimited amount of mana. This will grant them the ability to cast magic and regenerate without limitation. Even if their heads were to be severed a hundred times, they still wouldn’t be able to die even if they wanted to, as they would unconsciously use mana to regenerate them. It was said that without using the Moonlight Sword, it might take days to kill a Demon king, just as it had been with the Demon King of Carnage.
* **Fear Empowerment:** Possess the ability to strengthen themselves by instilling awe and worship in different races of people. The more people felt awe or worshipped them, the stronger their power grew.
* **Ability to spread Demonic Disease:** After one became a Demon King, their magic became more ominous enough to be fatal against the elves, causing them to be infected with Demonic Disease despite their long lifespan.
* **Immortality:** Possess the ability to live for eternity without succumbing to the natural cycle of life and death.
* **Physical changes and Demonic Power**: This change only applies to humans who became Demon Kings. The Demon King of Incarceration and Destruction were the prime example for this.
* **Empowerment:** Each of the Demon Kings were stated to possess a unique ability to empower and strengthen their subordinates and followers. With the Demon King of Incarceration and Demon King of Fury having the ability to grant unique Demon Eyes to their subordinates and the Demon King of Carnage granting his subordinates use and access to Silent Darkness Ores, ores mined in his territory that he can fill with excess dark power and souls he harvested from lower demon folk to strengthen themselves and use however they liked in battle.
* **Contracts**:Due to the Demon Kings’ overwhelming power, many demons worship them as gods. Some made a contract with them to receive a part of their power in exchange for their own soul.

1. ↑  Chapter 252