The Mysterious Abyss

When they arrived, Matthias felt the scorching heat surrounding him. 

"Let me fight your underlings. They surely existed for a long time and know how to fight, right?" Matthias ordered.

"Sure, Master." The demon Kael'thos nodded and ordered his underlings to fight Matthias.

With this began the long and legendary tale where a god entered the Mysterious Abyss as a demon and became a superpower in just hundreds of thousands of years..

Briefing everything that happened in those hundreds of thousands of years, he fought the demons of Kael'thos and learned how to fight for three years.

He left the domain of Kael'thos and fought random demons for hundreds of years. 

He then met Aelius, an old noble Emperor who made wrong choices and was regretting and suffering in the Abyss. Aelius took pity on the barbaric fighting skills of Matthias with his potential and took him in as a disciple.

Aelius and Matthias traveled the Abyss, fighting and learning things; they were summoned to independent worlds that could summon demons, which amazed Matthias.

They were also involved in wars between Dukes of the Abyss, letting Matthias learn things about leading, warfare, and psychological tactics.

Aelius also taught many things besides fighting, like handling a kingdom, engaging in an all-out war, mistakes that must be avoided when leading a kingdom, and forming an elite guard.

Aelius perished in a conflict in his 50,000th year in the Abyss, which prompted him to found his own kingdom in the Abyss. With the help of Kael'thos and the subordinates that he recruited, he conquered a lot of territories. His rank also rose from Peak-rank Count to Mid-rank Duke.

With his reputation, he garnered the title of "The Duke of Vengeance" and was feared by the surrounding domains.

Tens of thousands of years later, Matthias fully established the Kingdom of Taros. Countless demons ravaged the territories surrounding them.

Other demon kingdoms declared war on Taros and chaos ensued.

More than a hundred thousand years later, Matthias established his sovereignty over the Southern Abyss.

He also ascended to become a Prince Rank Demon and closed on the title of Demon King.

He then visited other independent worlds and learned there, from craftsmanship, magic, utilization of energy, advanced technology, war vessels, space vessels, and even A.I!

When he felt that he no longer had anything to learn, Matthias handed the leadership of the kingdom to his trusted demon confidante, and returned to the rift.

He reappeared inside his Independent Space Hell, and surveyed the surroundings. He was different from the naive man who entered hundreds of thousands of years ago. His knowledge now was more superior than ever before.

"This is crude. Hell needs more hardship." Matthias snorted and opened his Independent Space Panel.

He adjusted the terrain to the extreme where any single wrong step could kill anyone. He also spread out Lava and even Lava oceans.

He created storm clouds with literal acid rain and constant storms and hurricanes.

He also summoned countless demon races like succubi, winged demons, destruction demons, decay demons, spirit demons, chaos demons, overlord demons, and some demon kings.

He accumulated tons of creation points when he was in the Abyss and some independent worlds. He even absorbed some huge stars to convert into creation points. His creation points reached 7.8 billion.

He consumed 4 billion points to apply a new law to his Hell and the Divine Kingdom; Infinite Expansion.

He created demon beasts in hell where they will also be a variable for resource wars.

He looked at the state of Hell now. He nodded with satisfaction. He looked at the state of the first demons.

Duke Mul'tas killed Duke Blood Demon in war and kicked the true demons out of their way. 

A human became strong enough to become a Baron and established his Barony in the south.

They submitted to Duke Mul'tas and, currently, Mul'tas is the current superpower in Hell. But that won't be long as countless demons have entered the domain, and there are a lot of stronger foes compared to the low-rank demons that could reproduce rapidly. But, that needs to be given time.

He exited the space and entered his Divine Kingdom. There, the aura of Faith was so rich that he was so intoxicated. He missed the feeling of Faith coming to him. He remembered that he was currently in his demon form so he reverted into his holy and mighty god form.

The palace suddenly shone with heavenly light, alarming the souls and angels. 

"Lord Creator is back!"

"Greetings, Lord!"

When he entered the magnificent Throne Hall inside the palace, he inhaled slowly. He walked steadily towards the throne and summoned his gold staff. 

His outfit turned into a white cloak that's rim is golden. 6 pairs of wings made of golden light appeared behind him. He climbed the stairs towards the holy throne and sat on it, full of pride, holiness, and purity. His face was also automatically shrouded with divine light.

The five Archangels Asher, Alumen, Alia, Ansariel, and Anariel appeared inside the hall and knelt towards him with reverence, "Greetings, Lord!"

Their aspects have changed so much since the last time they saw each other. Inside the Faith-filled atmosphere of the Divine Kingdom, their aura changed and some people's prayers and faith were also directed to them, transforming them into four winged archangels.

Their clothings was pure white armor with a cloth inside with the same color. Their eyes had a hint of golden sparkle within them, and weapons if their choices were held by them while kneeling.

"At ease." Matthias smiled behind his light-shrouded face and waves his hand down. They understood and they stood up.

The Archangels sensed that their creator felt a little more mysterious now. 

"Tell me. What has happened to my Divine Kingdom when I was away?" Matthias asked.