City of Sin - Book 1, Chapter 37B

System: You are now a lowly male supporting role, a passerby who wants to go offline at any time, please keep secretly and grow vulgarly.
Shi Yan: Very good, thank you for your suggestion.
The first world: Shi Yan, as a little prince born in a cold palace, made himself an emperor.
The original male and female protagonists, under his witness, became grudge couples.
The second world: Shi Yan, as the youngest son of the princess who died tragically, made himself a powerful minister over ten thousand people.
The original male and female protagonists, under his witness, became grudge couples.
The nth world: Shi Yan, as a genius in the world of comprehension, has made himself the number one powerhouse in the Three Realms.
The original male and female protagonists, under his witness, became grudge couples.
The system feels that something is wrong.
Shi Yan instead persuaded him: Let the male and female protagonists come together in the end no matter what the circumstances are, isn’t it the self-cultivation of the tool man and the male partner?

Content tags: Kuaichuan Shuangwen Metaphysics
Search keywords: Protagonist: Shi Yan ┃ Supporting role: ┃ Others:
One sentence introduction: The male partner is beautiful alone
Purpose: strong heart, unmoved by wind and rain

- Description from novelbuddy

Murong Jiu, the Ninth Young Miss of the Marquis Mansion, was ugly and talentless, and her fate was to harm her relatives. She was raised in the countryside from a young age. Due to her exceptional medical skills, she was used by the Crown Prince, who drained her of all her value and then threw her into a deep well to drown.Only before her death did she realize she had been switched at birth. Others were rightfully enjoying everything that should have been hers; later, all her family died for her, becoming stepping stones for the Crown Prince!Reincarnated, she returned like a vengeful ghost from hell, making her enemies tremble with fear, ready to seek revenge for each grievance.Unexpectedly, she unintentionally became the darling of her biological family, which made her retract her sharp edges.As the substitute Princess Consort of Prince Ling, she and Prince Ling were a fake couple, intent only on finding the real father of the child in her womb, yet unaware that the man from that night was right in front of her…

The day she transmigrated it, she was already the wife of two men. She later became the Queen of the country. Her life has been cherished by seven men.

(No Female MC + Ruthless + Infinite Style + MC is not a saint)“Are you tired of mediocrity? Do you crave power?If you want to break free from the ordinary and possess power that surpasses all beings, then join this game.”Ye Shuangluo was chosen by a mysterious game to become a reserve player. As a player, he must face opponents from other parallel dimensions and multiverses. Fortunately, Ye Shuangluo awakened his unique talent: “Achievements Master”. By accomplishing a series of achievements, he can obtain countless powerful skills and attributes.When the cross-server war begins, foreign players traverse the spacetime gate to his star. Ye Shuangluo stands above the sea of stars and strikes with a single slash. The unparalleled blade aura instantly annihilates all invading enemies. Facing the countless terrified enemies on the other side of the spacetime gate, Ye Shuangluo sighs and says leisurely:“I really just wanted to quietly rack up achievements, why did you have to force my hand?”