Okami Wa Nemuranai - Chapter 55.12

She killed his wife, destroyed his reputation, and ran off with his son. 8 years later, she returned home with her genius son, who already had a fiancée. “Give me the child, or you can’t afford the price.”“A girl who eats meat and vegetables doesn’t suffer, if you want a child, find yourself a woman to give you one.”

The whole world is subjected to a highly dangerous standardised exam called the Global University Entrance Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

- Description from Novelupdates

Apollo Kaiser, a boy who bore the unlucky fate of being unable to grow strong, was condemned by his family.

Discarded by his mother and abused by others, Apollo gives in to his rage.

However, this action results in his death. Many would believe it to be the end, but Apollo's death was a required catalyst.

The Demon Monarch System finds its heir and attaches to his soul, bringing him to a new world where he starts his journey to supremacy.

This difficult journey rife with conflict, conquest, and brutality shall serve as Apollo's temperance.

Watch as the heir of the Demon Monarch rises above all, conquers Sin, subjugates unthinkable enemies, and even brings about the destruction of worlds!

The rise of the next Demon Monarch begins...

twelve years ago.

The queen gave birth to a princess, who claimed to be the prince, named Xia Shimin.

three years ago.

Xia Shimin was established as the prince, and made a marriage contract with the current Taifu’s daughter to stabilize the imperial power.

…

Zhang Ronghua had traveled through time when she was born, hereditary and hereditary, her roots were straight and her roots were straight, and she was an upright Forbidden Army. He had been in the palace for fifteen years, and his talent would increase a little with each passing day.

Seeing that the prince’s wedding was getting closer, he accidentally broke the body of the prince’s daughter.

The night of the wedding.

Prince: “You can replace the lonely bridal chamber!”

- Description from novelbuddy