The male protagonist in the novel has a relationship with many women. Because his brother is incompetent, he has sex with his sister-in-law. His parents also agree. Later on, he even took in other women.
It might not be exactly what you need, but I would recommend a novel that is most relevant to your description of your needs: " The Big Boss of the Substitute Group, Man Is Crazy " is a modern romance novel written by the author in his twilight years. The general plot of this novel is: After the twin sister was killed, the younger sister married into a rich family in her place in order to find out the truth. However, because she kept forgetting her husband's name, she was mercilessly exposed by her husband. Only after her identity was taken off one by one did her husband realize the multiple identities of his substitute bride! From then on, he started to pamper his wife without limit. Not only did his husband pamper her, but his mother-in-law and grandfather also doted on her. The whole family treated her like a treasure. ---------------------------- " I Raised Four Trash Brothers into Big Winners " was a modern romance novel written by the author, Chang Xiangshou. The general plot of this novel was: As everyone knew, the Ci family was rich in trash. He had resigned from his father's family business, but he did not even have an heir. "We don't want to take over the family business. We just want to eat and wait for death," the young masters of the Ci family said one after another. "Dad, as long as I use the company as my dowry, my idol will marry me!" Father Ci was almost angered to death by his unfilial children. Until one day, his children were collectively enlightened. The eldest son became a business elite, the second son had countless fans, the third son was determined to be the Master Chef, and the youngest son was addicted to learning. The younger daughter, who used to only have eyes for her male idol, suddenly changed. Not only did she no longer chase after her male idol, but she also had four older brothers to dote on her. The younger daughter said," It's so boring to be in a relationship. It's enough that my brothers treat me well." A certain noble and elegant man quietly tugged at the corner of her shirt." Broken Broken, come with me. They're not as good to you as I am…" ---------------------------- " The Noble Daughter of the Farmer's Gate: The Elder Sister Is Like a Mother, Busy Raising a Family " was an ancient romance novel written by the author, Ting Shuinan. The general plot of this novel was: Gu Jia, who had been the only daughter for almost twenty years, was suddenly told by her parents that she was going to have a younger brother or sister! What if they really didn't want to call him brother or sister? In the end, she transmigrated and was bound to the 'elder sister like mother' system. He told her clearly that the meaning of her life was to not lose a single one of her sisters and to take good care of them! Sister, I want to be the wife of the champion. Sister, I want to be the owner of a brothel. [Sister: Big Sister, Big Sister, it should be quite cool to be a bandit.] [My younger sister: I want to be a treacherous minister's concubine!] Sister, I want to be the richest woman. [Sister, why don't I just be an empress!] Gu Jia flipped the table." System, I quit. How am I supposed to lead such a weird team?" A certain man came over cheekily and said,"Sure, as long as you're my princess regent!" ---------------------------- " The First Wife " was a modern romance novel written by the author, Dugu Wei. The general plot of this novel was: A prince might not marry a princess. It could also be the princess's…vicious stepsister! They had the same father, so she didn't understand why she was always inferior to her sister. Later on, she understood that she was just the child of a mistress. Her father's beating and scolding made her want to destroy everything that belonged to her sister, including him… She had used some tricks to get him. At her sister's birthday party, she had created the illusion of "drunken promiscuity". Under everyone's watchful eyes, he was forced to take responsibility and marry her. She had become his first wife! He said,"I married you because I didn't want you to follow in your mother's footsteps. You and I have nothing to do with love." He said," In my heart, you two sisters will forever be separated by heaven and earth. She is a real princess." He said," The status of husband and wife is already my biggest concession. Don't ask for more." … "…Getting me is just a game for you to take revenge on your father and sister?" he asked. … He said,"You really…never loved me? Even a little?" … Finally, she smiled. She smiled casually." I'll remember all your warnings. Thank you for your 'careful' care over the years. Now, Game Over!" … New article recommended-" Fighting for Husband " She opened her eyes, but before she could regain her senses, her muddled mind was once again struck by the woman's words. It was said that the ratio of men to women in this country was one to a hundred. It was said that the women in this country tried their best to give birth, but it was very difficult for them to give birth to a son. It was said that as soon as a man was born in this country, he would be booked with fifty wives and concubines. It was said that because the proportion of men was too small, women were used to snatching a husband at all costs, even if it was only the title of the fiftieth concubine. Oh, right, it was said that…this country had a law. The upper limit of a man's wives and concubines was fifty… Faced with the patient guidance of the woman who claimed to be her mother, she laughed dryly. Alright, since this was the rule of the game, then…she would use all her skills…to snatch a husband back! It was rumored that the Ninth Young Lady of the Minister of War was famous for snatching her husband. Whenever a man sent out a "wife-seeking invitation", she would always be present at the scene of snatching her husband… However, he was always defeated in a hundred battles, a hundred defeats…never slacking off! In short, this was a difficult history of a woman snatching her husband. And the history of how she defeated many concubines and became the mistress of the house. Wenwen was not a noob. The female protagonist was playing the role of a pig to eat a tiger. She was insidious, black-bellied, and immoral! 。 ---------------------------- " Good Pregnant Couple: Heart-warming Baby's Black-bellied Father " was a modern romance novel written by the author Xue Ling. The general plot of this novel was: Tang Zhouzhou felt that he must have a special physique that attracted scumbags! From an ex-boyfriend who had dumped her for no reason and then disappeared, to a tall, rich, and handsome man who had a girlfriend and was trying to curry favor with her in all kinds of ways…Yet, his mother kept nagging him day and night,"Look at you. You're almost 28 years old and you don't even have a partner." I don't believe that none of the men I've met are reliable. He had made up his mind to go on a blind date, but not only did he not find a partner, he even met a little princess. The little princess followed behind him and said in a childish voice,"Sister, will you marry my father and be my mommy?" Gongju's father said,"Yes." That was a good idea. Yes. The plot is fictional, please do not imitate it. ---------------------------- " The Young Mistress of a Wealthy Family " was a modern romance novel written by the author, Jing Fengcai. The general plot of this novel was: The three older half-sisters had originally found three random men to deal with their grandmother's forced marriage, but they did not expect to bring back three super rich, powerful, handsome, and loyal men! [PS: This article has three male and three female leads. The ending is one-on-one. Sweet article. Please be careful when you enter the pit!] ---------------------------- " After torturing me, the Scumbag King and his brothers line up to jump off the building " was an ancient romance novel written by the author. The general plot of this novel was: [Chasing his sister, wife, and crematorium group's favorite novel + interplay + system + cool novel, change back regularly!] She was once the only daughter of the Xiao family who was doted on by her six brothers. She married the man she loved and became the Fourth Princess Consort. One day, she picked up a white lotus with a system. After curing her crippled leg, she became the only Godly Doctor in the world. Countless big shots were willing to become her loyal subjects! After knowing the truth, the brothers cried bitterly. Her brothers were wrong! We'll spoil you in the future! Money, power… ---------------------------- " Dragon and Phoenix: Kidnapping a Big Boss to Be a Daddy " was a modern romance novel written by the author, Granny Jin Hua. The general plot of this novel was: " Marry me and be my ex-fiancé's aunt. Whoever mistreats you will be mistreated back!" From now on…" Reporting to the CEO, Madam wants to buy the rival's company!" Jun Siming said,[Give her the card and spend it however she wants!] "Reporting to the CEO, a man sent flowers to Madam." "Prepare a wreath for him." "Daddy, can you please give birth to the younger brother and sister you owe us before the new year?" Early in the morning, President Jun knelt on the washboard." Don't be angry, my wife. It's not good for the baby to be angry." Five years ago, she was persecuted by her best friend and fiancé. Five years later, she returned with her two children. She was ruthless and ruthless, and peach blossoms blossomed… ---------------------------- " The All-powerful Time Traveler's Sister " was a fantasy romance novel written by the author Sun Jiuniang. The general plot of this novel was: His sister was omnipotent. His sister was useless. My sister is talented in literature and martial arts. She can lift tiles on the roof and kill enemies with a knife. She can write a poem in three steps. His sister was like Liu Fufeng, fainting at the sight of blood and collapsing at the sight of wind. The elder sister knew many powerful men, and the younger sister had many good brothers. ============= The new book," The System's Elder Sister Is Difficult ", had been uploaded. The System replied,[Don't expect me to do the quest honestly. I'm just here to make you uncomfortable!] ---------------------------- " The Reborn Humble Elder Sister " was an ancient romance novel written by the author, Youpo Yingluo. The general plot of this novel was: In her previous life, she had given her fiancé to her younger sister because she was her elder sister, and she had also given all the money that her husband had given her to take care of to her family.