A long time ago, when the universe had not even existed, there were eleven unique gods that roamed the celestial plane.

Each god was unique in both power and the attributes that they embody.

For every god, there is a weaker god that serves under it.

Six gods and five servant gods.

The gods each had their own empire where they ruled over all the mortals that existed within their boundaries.

The only exception to this is the Insanity God [Psycho Joker] without a servant and known to the rest as the weakest god amongst them.

When the Battle God [Agnio] obliterated the territories belonging to one the servant god of the Terror Incarnate, a war begun which dragged the rest of the other gods into a battle which lasted exactly a decade.

The Holy God [Xeno] and his servant used their magic to prevent entry into their territories. But alas, since trade had been cut off, the mortals soon suffered a famine and led to their demise.

Without faith, the power source for the Holy Gods, they met their demise in the form of death.

The gods soon fell, one by one the servants followed and within the celestial plane, only five survived.

The Insanity God may not have any common sense, choosing to live only for itself, doing anything it wishes.

[Psycho Joker] blasted through every obstacle, defying all rules that exist to govern magic with sheer physical strength.

The worse part? It could only get stronger as more time passes…

The remaining five gods had no territory to return to.

So they made a pact. To seal away the Insanity God into a prison that defies time and space.

A second that passes inside the seal would be a million years outside of it with the special system that erodes the seal using time from the inside so that it will be trapped for almost an eternity.

The space exists to create an endless void which makes it almost indestructible.

It laughed maniacally as it tore apart the lands.

It noticed that the other gods were preparing for a space-time spell.

Using its analyzing skill, it determined the nature of the spell and prepared its own counter for it.

It used its unique attribute [Reversal Card] to swap the time of the seal to a million years inside will be a second on the outside with the combined attribute of the eroding system being the same.

With its last breath before the mass of darkness consumed it, it spoke its final words.

'I leave you with this…'

An beam tore through the celestial plane into the endless sky, taking away the lives of the four weakened gods due to the consumption of mana to create the seal.

The last remaining god stood on the remains of the celestial plane, everything had become a void of endless darkness.

The god channelled his mana into a sphere to create what we know as the big bang.

From there, the god created the universe we know and exhausted almost all his magic to create life which in turn, created Earth.

The residual magic from the deceased gods attached themselves onto living beings to create magical creatures such as angels, dragons, etc.

This god lived as the biblical god and separated his negative emotions into a container.

The container was opened by an angel named Lucifer which marked the creation of Devils.

Species discrimination led to the Great War of Devils, Angels and Fallen Angels.

The final god was slain during this war but with his last breath, he created the sacred gears which were fragments of his soul combined with powerful magical creatures.

These sacred gears were only given to humans so that they may stand on equal ground with the magical beings.

In the end however, the god still had a question which will never be answered…

…Where had the seal disappeared to?

From the moment the Insanity God had been sealed till the day Hyoudou Issei was born, almost 430,000,000,000 trillion years had passed within the seal.

For every day that the Insanity God was trapped, he took existing magic and enhanced them to levels which were unseen.

The sheer amount of magic used and made everyday in its body was so immense that the greatest of magical beings would be ashamed.

It took magic to new heights, creating its own set of magic attributes known as [Psycho Null] to replace its arsenal of elemental spells.

[Psycho Null] was a spell type that was made to be equal against another element where the caster would only need more mana to overpower the opponent's spell.

Many millions of years had passed and the spells in its arsenal had shrunk to three spells that were unmatched in both power and utility.

The naming has unknowns in the name of the spell type where the unknowns can be filled with every word imaginable (or spell name)

[? Eater], a passive spell that consumes magic from foreign mana to prevent it affecting the body such as hypnosis. Normally gods would be naturally born with immunity to spells but this takes it to a whole new level where it eats any form of magic to permanently enhance itself.

[Create ?], a spell that creates anything that the user wants. Naturally an ability that all gods have but cannot create anything more powerful than themselves. It took this to a entirely new state where it can create anything as long as the description of the item ability is stated mentally.

[? Break], a created spell that can take the form of any projectile or weapon type. As long as the target is set, the weapon will not eradicate anything but the target. It is similar to how spears of light are formed by angels.

The countless years passed. With each passing day, the Insanity God had only grown in not only power but also in its insanity.

It built up its main spells to the point where it was instantaneous and capable of turning universes into dust in a matter of nanoseconds.

It took its weaknesses and turned them into unparalleled strength and advantages.

It created limits on itself to push its strength and control even further.

With its ability, it began to defy the laws placed when it was created.

It broke its own limits, reaching new ones and shattering them all the same.

Such immense power, so much so that it had to limit itself so that it would not destroy physical matter with just its presence.

Why would this god go to such lengths for strength?

The answer however is not revenge against the other gods for sealing it, in fact, it was thankful for the disregard of time for it to strengthen itself.

It wanted power simply because it wanted to be stronger.

It does whatever it wants, whenever it wants it.

The seal could have been destroyed eons ago but it chose to take advantage of its distortion over time and space to gain unimaginable power.

Now, it has stepped out from the curtain known as the seal onto the stage known as Earth.

With near limitless power that continues to grow every second it exists, it chose to appear on Earth just to have a vacation…

…Its official, we're universally screwed.