Summoner: Monster Girl Harem! - Chapter 7 A Past Vendetta [Bonus]

Unite the Clans? Create an Empire?Atrox Soryu thought he was destined for greatness… until he wasn’t.Born into the smaller Soryu Clan, Atrox was a prodigy, praised for his unparalleled swordsmanship and relentless ambition. He vowed to become Emperor of the Eternal Skies, a title that hadn't been claimed in centuries. But on the day he was to manifest his Order Mark—the source of every knight’s power—everything went wrong.Instead of the revered Holy, Elemental, or Mystic Orders, Atrox was branded with a Forbidden Order: Something twisted and wrong. A death sentence in the eyes of the world. Branded a monster and exiled by his own father, Atrox was cast into a brutal labor camp where the weak are crushed, and the strong are barely tolerated.But exile isn’t the end—it’s the beginning. In the harshest of conditions, Atrox awakens the full potential of his forbidden powers, powers that could rival even the strongest Knights. He will forge alliances with the forgotten, turn his enemies into allies, and rise from the shadows to build an empire from nothing.Betrayed, exiled, and broken? No. Atrox Soryu is building an empire—and the Eternal Skies will bow to him.

She, a modern hidden ghost leader of an organization which gathered insane prodigies proficient in the various differing skill-sets. Highly skilled in medicine and poison, executes covert assassinations, viewed as insane and demonic in the eyes of people of the world. Killed in an accident, and reborn into the body of a disfigured young girl.

What? Face disfigured, identity stolen? A return to the family dim and hopeless? Her identity can be given up, her family can be forgone, but as for the one who harmed her predecessor who inhabited this same body, if she didn’t at least make them scream in unimaginable agony and throw them into a state of wretchedness, how could she live up to her demonic reputation? Endless turmoil ensues and it’s a battle to dominate over all! See how she shook the world dressed in a suit of red, her sword up against the dominant powers that rocked the Heavens! Her name spread across the seas, shocking the earth!

- Description from Novelupdates

Shen Yu was sincerely in love. For that person’s sake, Shen Yu ignored his illness-ridden body and plotted to overthrow the tyrant. It was only after Shen Yu died that he learned the truth. He was a character in a book, and the man he loved only viewed him as a stand-in for the protagonist. To pave the way for that couple’s happiness, Shen Yu lost everything.After he was reborn, the sickly Shen Yu was so done with that.As for that man, whoever wanted him could have him.Shen Yu took his half-brother’s place and became the male concubine of the tyrant. The tyrant didn’t like men anyway, and Shen Yu didn’t have much time left. Since he was going to die, he might as well go to the palace to sit around and wait for death.After entering the harem of the tyrant everyone feared, Shen Yu ate and drank without a care in the world.The tyrant, with long black hair on his shoulders and crimson eyes, didn’t hide his hostility. He grabbed Shen Yu by the neck. “You’re not afraid to die?”Shen “Just get it over with” Yu felt a little excited. “Are you going to kill me now?”Tyrant: “? ? ? ? ?”Shen Yu entered the palace expecting to die, but he waited and waited and waited. In the end, the officials petitioned to make him the empress, and the tyrant cured his deadly illness.Shen Yu: “…”Shou: jumps frantically up and down on the gong’s bottom line but never diesGong: all he can do with the shou is lower his bottom line again and again

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