Junior sister, keep forbear for a while, I almost become invincible as soon! - Chapter 20 Eighteen Years Old, Still Young

The Hero’s party was attacked by a large group of powerful devils. The party will no doubt be annihilated if this were to go on.

Qin Pan, originally A country famous goddess of war, a genius military doctor! But she was betrayed by her comrades, resulting in defeat! With her hands wounded, she was demoted as a civilian. In order to cure her mother’s illness, she had to put down her identity to beg for help. Relatives: “Get out! You want to borrow money, you deserve it?” Scum: “I Engaged with you just because of your status. But now you are a waste. We quit marriage!” Only that handsome man, holding her hand, “Don’t be afraid, I will let you stand on the top again.” Qin Pan looked at him, “Who are you?” “Your believer.” Later, and Qin Pan acquired the miracle doctor system, which not only cured herself and her mother but also made her abilities even more terrifying. Relatives begged, while Qin sneered, “Get away! Do you deserve it?” The scum repent, Qin kicked him away, “Don’t let me see you again! As for the man at home... After Qin Pan slept her, leaving a note.” Wait for me three years, I will come back to marry you.” Qin Pan returned to the army to beat all the people who framed her hard blow, but to her surprise, she met the man who was supposed to be waiting for her at home in the army. Xi Ce smile, “What a coincidence.” Qin Pan: “...” The day Qin Pan was reinstated, the soldiers were shocked to see – their cold Major General Xi Ce, half kneeling in front of Qin Pan, kissing the back of her hand, said “My god, can now love your believer?” “Unfortunately, I am not your god, I am an evil spirit of hell, and come back only for revenge.” Never mind. “Seize kissed her red lip.” If you want to love, I will love the world with you. If you want to hate, I will help you destroy the world.”

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

In the fantasy world ruled by Matriarchy, Kael of the Ancient Moonstone House, was working as a guild receptionist. Throughout his life, he was protected by his mother and later, younger sister, who was considered one of the highest potential individuals in the Queendom of Elyria. One day, he hears that his sister has gone missing and his family has accumulated debts of over 127 million gold coins to the Bank. The Queen comes to his rescue, paying off his debts and in exchange, he has to marry her five daughters, who each excel in a domain of their own.Having the five imperial princesses and the Queen herself as the backing, Kael has become one of the most protected individuals in the Queendom. Little did his wives know that Kael had another identity. He is the most dreaded yet noble Assassin of the imperial city, “K,” one who hunts down the criminals who escape punishment either because of insufficient evidence or using their connections.Follow Kael's journey, as he navigates his life as the protected figure in the light and protector of justice in the shadows.