A Hentai System in the World of Danmachi - Chapter 1: Prologue.

[Reminder: Yuri, GL, Yandere, No NSFW, Only Wholesome Romance, Toxic Heroines, Slow Paced, Slow Romance, Slow Burn, Slow Harem.]“Damn it, why the hell am I the Villainess?”Petra, a human resources manager, just went through a painfully dumb breakup. To cope? She did what any sane woman would. Binge-read a guilty pleasure romance and smut novel series from her teenage years, only to realize that the heroines have brain-cell-deficiency.One way led to another, she wakes up as Verena D’Auvergne—a minor antagonist who turned out to be the ultimate villainess of the whole series after an incident. The very woman who stole all the love interests and died trying!“Forget the male leads, I have to make the heroines forgive me!”Can she, the ultimate villainess, capture the forgiveness of the very women she was meant to destroy? Or will the cursed System, and fate itself, force her to chase after love?

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates

She barged into his office, ignoring the secretary who was trying to prevent her.

He looked up from his files and frowned to see the girl who just barged into his office.

“ What are you doing here?” He asked her coldly.

She smirked proudly and flipped her hair back and said, “ What do you think I am doing here? I am hungry, take me out for lunch.”

He knitted his brows, “ Why would I? Didn’t I already pay the compensation? I have zero obligation to feed you. So go away.”

The corners of her lips turned into an evil smirk, “ Do you think that you can get away from me that easily? Tsk, tsk. Mr. Han, you have really underestimated me.”

“ I will hunt you down even if you try to hide away from me in a faraway mountain.”

...

Jiang Yue is a member of the most popular and powerful girl group who has lived her life with fame and glory. But what happens when she suddenly dies due to an accident and wakes up in the body of a hidden heiress of the Gu family?.....

Xu Nuan is an obedient and timid girl who suddenly becomes sharp-tongued, bold, and fearless after the accident. Can the people who have always looked down on her accept her strong and fearless attitude?

Han Zihao, President of Han Corporations was known for his cold and unmatched aura was forced to yield in front of the stubborn girl who jumped in front of his car. How will he be able to react to Xu Nuan’s fierce and spirited influence?

The first time they met, she broke into his room, ran into him who had just come out of the bath, calmly met his dangerous gaze, and flirted wantonly: “Handsome guy, he has a good figure~”

The second time we met, at a grand banquet, she was bright and flamboyant. After abusing someone with her front foot, she leaned towards him with her back foot, and asked obediently and softly: “I heard that I am your shield girlfriend, can brother help me with this tool?” Do yourself a favor~”

From then on, Master Qin’s family had a little goblin who was in control of heaven and earth, who would stir up fire in his heart every day.

Everyone said that the An family’s real daughter was inferior to the fake daughter in every way, she was a rustic old hat who grew up in the countryside, and she couldn’t even match the fake daughter’s hair.

As a result, together with the fake daughter, they were all slapped in the face, and their heart, liver, spleen and lungs were hurt everywhere.

The crowd also said that even if a real daughter is better than a fake daughter, she is still an abandoned daughter who has no power or power, and her father does not love her mother, and she is not worthy of Master Qin at all.

Little did they know that the awakened parents and the four elder brothers were humbly seeking the truth and returning home every day.

Until one day, the real daughter announced that she was going to retire from the world and go home to take care of her husband and teach her children.

Immediately, countless bigwigs standing at the top of the world cried and begged her to stay…

- Description from novelbuddy