The Protagonist System - 10 Change Is Constant

This is the story of a young man who was reincarnated as a dragon with a near-insatiable curiosity. Initially sparked by questioning his own reincarnation, he quickly gets lost in the endless world of magic, using his deep understanding of advanced sciences to learn the laws and properties of a new type of energy known as mana.However, soon enough, the table would flip, and he would begin using that very same energy to expand his knowledge of science, to the point that he would begin questioning his own understanding of the world.Although not his original intention, with the combination of his intelligence, expanding curiosity, and the 'miracles' that occurred to allow for his existence, he quickly found himself climbing the mountain of strength as if it were a small hill before eventually climbing to a point where it seemed as if he himself was the peak itself.Even if.. that was never the case...There is mild gore, and profanity is 'censored' toward the beginning, but not later in the story.

Su Xin was a world-class hitman. One day, she died in a disaster and was bound to the Fate Trading System to change other people’s destiny and increase her own life span.

Brothel prostitute: I want to become the first beauty of the Four Countries!

Imprisoned Mermaid: I want to return to the deep sea and become queen!

Adorable Loli: My elder sister is not human, kill her!

Miss Republic of China: Don’t let older brother be extremely infatuated with third aunt!

Su Xin: Your circle is really messy…

- Description from Novelupdates

When Evelyn’s loser fiance steals her company's secrets and elopes with her prostitute mother, she finds herself facing impending bankruptcy. But unexpected help comes in the form of an unusual offer from her business rival and ex-boyfriend, Alexander Langford.“Bear my children, Eve, and I’ll save this precious company of yours.”To everyone else, Alexander is the heir to a billion dollar fortune, and the acting industry’s handsome darling. But to Evelyn, he is nothing more than a cold-hearted, arrogant man she dumped for being a compulsive liar years ago - but unknown to her, he has never lied about his love.How could Alexander miss the golden chance to hit two birds with one stone? He gets his inheritance, and a family with the love of his life. Now, if only dear Evelyn would stop thinking the worst of him…[Strong female lead x doting male lead.][EXCERPT]“You’re out of your mind,” Eve snaps. “You could have any woman in this world, and you want ME to be the mother of your children?!”“Why not? You’re smart, savvy, and fucking hot,” Alex says as he takes a step forward, trapping her body between his muscular arms. His dark blue eyes gaze deep into hers with unbridled lust. “I want our children to have the best from both of us. Our children could take over the world.”“There is no ‘our’,” Eve says coldly, pushing him away. “I will be the surrogate for your children. This is nothing but a business deal. There is NO love in this contract. But in exchange, you need to do something else.”“And what is it?”“Help me take down my ex-fiance. That bastard deserves to die after fucking my mom and ruining my life.”Alex chuckles. “It’s a deal then, sweetheart.”It was nothing but a business deal at first. But what if the line between business, love, and hatred were getting blurry as they got entangled too far and too long?[Power couple, slow burn, getting back together.]

An engagement paper to lock one’s destiny. With her family facing financial difficulties, she marries into the family of the richest man in Qingzhou as his wife. Her Mother-In-Law’s doubtfulness; her husband’s childhood sweetheart; her mean elder sister-in-law; her narrow-minded younger sister-in-law… Being inferior, Sang Wan withdraws without a choice. As time passed, she ended up being lonely and died tragically.