Master of the Demon Emperor - Chapter 705 Hongmeng Ancestor of Chaos

He was a wealthy and mysterious financial backer who had appeared before her when she needed money the most. After the courtship, she took the money and left.

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

The scum’s or villain’s long road of transformation was tentatively set to the world:
The abandonment of the educated youth’s wife (Completed)
The hidden marriage of the scum film emperor (Completed)
The best brother in the world (Completed)
The Phoenix male who destroy the bridge after crossing the river (Completed)
The treasonous general (Completed)
I’m an honest man (Completed)
To become the top scorer in the School of Agriculture (Completed)
The soft rice man’s self-cultivation (Completed)
The whole world is reborn (Completed)
I want to survive on a desert island (Completed)
The stallion male who has seized the opportunity (Completed)
The perverted self-salvation (Completed)
The spring of the loafer (Completed)
The misplaced life (Completed)
The miser career (Completed)
The ghost is out of feeling (Completed)
The Queen’s favorite husband (Completed)
The vicious girl with her godfather (Completed)
I want to be a good person (Completed)
I does not tear up the family (Completed)
The perverted common plant (Completed)
The Mary Sue’s men (Completed)
Every time I was reborn, someone wants to kill me (Completed)
The old people’s counterattack path (Completed)
The global evolution (Completed)
When I became a net red (Completed)
For you, good person (Completed)
His heart had white moonlight (Completed)

- Description from Novelupdates

“You better stop the fucking prank, woman, and just pick up your phone and call your alpha! Otherwise, I will press the damn button and blow you up,” A man with a very ugly-looking scar on his face said menacingly, holding a time bomb remote control in his hand and shaking it back and forth before a woman.In the last moment of her death, Rose looked into her heart and cried bitterly.“If I had a second chance, Rolan, I would never have agreed to marry you. I would never have had hopes in you.” _____On the day of her sister's wedding, Rose found herself thrust into an unexpected role as the bride when her sister failed to show up. Marrying a man who had loved her sister for three years, Rose held onto the fragile hope that he might one day care for her. But her dreams of love quickly crumbled—he ignored her, treated her coldly, and never gave her the attention she longed for.Even at her lowest, when Rose’s life hung by a thread, he was nowhere to be found, choosing instead to enjoy his time with her sister. Rose’s heart shattered as she took her final breath, consumed by betrayal and despair.When she opened her eyes again, she was back in her younger self—not before the wedding, but on the very same day she was meant to die. This time, Rose vowed to rewrite her story. She would stop loving him, leave him behind, and refuse to let herself be caught in their web of betrayal again.But the peaceful life Rose planned never came to be. Against all odds, she discovered she was pregnant—carrying his child. Now bound together by this unbreakable link, Rose must face the man she once loved, all while trying to guard her heart.Why is he chasing her now? Why wasn’t he with her sister when she ran away and left him? Why does he seem desperate to win her back when all she wants is to stay far away?