A young girl is sent to court, where many angels have gathered to decide she should be exiled from the kingdom of heaven, because of her sins. When the young angel hears that, her eyes widen in disbelief. Then soon enough, the ruler of heaven sends her to hell to live with those sinful beings.
In the kingdom of hell, there are three ranks: one is the classic demons who are considered to be lower rank and either have a position of commoner or servant with weak power.
The second rank is nobles, who are known to be powerful ones, and possess a huge amount of mana.
Then the last rank is none other than the royal family, a very powerful family that rules the entire land of hell, and every demon is at their mercy.
You´d expect that the royal family is considered to be the most powerful demons in hell, but you are wrong. For there is one person who has greater power than the royal demon, and she is a fallen angel.
That angel, who is now living amongst the demons, is the most powerful one yet, since her powers are from heaven.
Which is the only magic that can kill demons instantly, and the very power that can kill nobles, mostly the royal family.
This all happened because an angel loved the wrong person, who only saw her as a tool to get more powers. It wasn't entirely her fault considering her father was the one who chose her spouse.
Selena, the name of the unfortunate angel, was deceived and lied to throughout her life. Because her spouse was very manipulative, who acts all sweet and caring.
Yet once you take a good look inside of him, he can be more menacing than a demon.
After getting married, he did show his true intentions and admitted that he manipulated Selena, which caused her to be deceived, and all her power was taken from her, including her crown.
Not only that, but that bastard also convinced heaven that Selena committed an outrageous SIN. Which was killing one of the High-Rank Angels. A type of angel that is the second in rank to a God, and also very powerful.
And what that bastard did to that High-Rank Angel is taking away her powers, along with killing her, which many angels had witnessed.
So when heaven hears the news, they point fingers at Selena, the princess of Heaven who would have been the next Goddess. Yet due to the unfortunate event, this would not come to fruition.
She is harshly accused of the incident, making her father have no other choice but to vanish his own daughter.
Selena begs on her knees, telling everyone that she is not guilty and that her so-called dear husband, whom her father had chosen for her, was the culprit.
But somehow, he not only manipulates Selena into loving him but also the entire court. This means he deceives EVERYONE, thus convincing them that Selena was indeed a sinner.
And so... Heaven has shut the golden gates on her as she falls to the deep pit of hell, where she looks back while she struggles to fly up, as her tears slowly fall down her face.
Asking herself, "What did she even do to deserve this?"
Once she falls into the land of hell, she sits back and looks at her hands, and notices she has begun shaking with fear.
She sees her gorgeous white wings become dark as a shadow, and her beautiful golden Halo turns white as she becomes a forgotten soul.
This makes her the very first fallen angel due to a sin. This was a misfortune, but even if she was a fallen angel, she still has the power to kill that bastard, along with everyone in Heaven who took everything from her.
"They will regret... EVER HAVING TO BANISHED ME!"
Once her entire appearance and personality changes... She heads forth to the Demon King's Castle, where a lot of demons stare at her with such anger that even some of them try to attack.
But as she pulls out her holy sword, she just slices through them, making the other demons back away, while the Demon King, named Nicholas, just smiles in amusement.
"So what do I owe the pleasure of Heaven's own Princess? Or should I say... ex-princess~" The Demon King says with a smirk.
She is silent as she walks down the hallways, and when she reaches the king, she kneels down on one knee and presents her sword in front of him, making Nicholas grow even more interested.
She began to speak and she asks the King for help to overtake her father from the throne and destroy heaven.
Now, this makes the king laugh at her, as he didn't want to get involved with a pest that barged into his territory, but of course, she knew he would say that so she offers him a deal.
A deal in which he can use her as his tool, a sword to kill any enemy who wants to take his throne, and a shield that can protect his entire kingdom. A deal in which she pledges her loyalty to the demons as long as he offers her an army and an alliance.
"And if we win this war... I promise to make Heaven bow unto you, my Lord."