There is One New Rule Every Month Globally - Chapter 724: Extra 5: The whole family’s honeymoon trip.

Doomsday comes, and human beings enter the heavenly world.
Ten years later, Yang Chen, who was betrayed tragically, returned strongly with the Tianyu bug. In this life, he vowed to make the betrayal pay the price. He has a powerful bug bonus, just like an open hang. Frightened to hear…

- Description from novelbuddy

The light is here because the darkness exists. Just like that, the human realm exists because the demon realm is here. And in the great palace of the Blade Empire, a crown touches the peak of its glory before it falls from its grace. Lush Von Blade was the royal crown prince of one of the greatest empires on the southern continent. He is loyal but betrayed.On the other hand, where even the Gods fear to set a foot on, a demon lord abides. His grace and cruelty have been unseen for centuries. He is the supremacy in the three realms. While Lush is the light, he is the darkness. Each exists because the other is here.

The world changed the day that cracks appeared in the sky– suddenly monsters named『Demonic Beasts』appeared and began to rampage, attacking people.

Meanwhile, girls called『Magical Girls』began to appear to counter the demonic beasts. As they defeated the demonic beasts, gradually people’s lives gained a semblance of composure.

–but when there is light, there is also darkness.

In the corner of an alleyway, a boy who had been attacked by a demonic beast was dying. His voice begging for help did not reach anyone and his body refused to move.

「Boy. Do you want to be saved?」

Looking into the boy’s face, a black cat began to speak to him.

The boy nodded firmly to the devilishly sweet invitation, in response the black cat mocked him.

「Is that so—then I’ll【Haunt (Save)】you」

—on that day, a『Magical Girl』was born in a place that no-one knew.

『She』never laments, no matter what the future may bring.

When my whole class got summoned to another world, I was the only one to encounter a divine being on my way over.And when everyone started getting Systems that were to define their fates?I've got an FFF-Rank Failure System.And to make matters even worse, it bugged out as it attempted to launch, teleporting me to the centermost point of the world, right where the strongests of the monsters resided.Right into the lap of a Tyrant's Puma!But what's with that sparkling glinter in the distance, that comes bearing down the weight of our shared destiny?And who's looking down on a chessboard, smiling as the pieces are starting to move.The divine intervenes. The ancient prophercies finds fulfillment.The purpose long gone awakens as the universe's destiny weaves itself into the fate of the two entangled souls.