Can you recommend a novel where the male and female leads are a couple from the beginning and they are both very powerful, whether it's about the underworld or the city?

Time stopped at eighteen for Ji Yi, and now all she wants to do is pick up from where she left off. Her career depends on it, and on top of that, she has to survive a fake marriage turned real! Some missed opportunities are irreplaceable, and some misunderstandings between them have proven near-fatal, but for He Jichen, he isn’t just a pretty face—he’s an opportunist. They may have lost their prime years together, but He Jichen is more than willing to spend his remaining years with her. If only she would just trust him… Will Ji Yi be able to find true love in this life? Can she outmaneuver all the snakes plotting her downfall? Only time will tell...

“Commander Lu, there are rumors that we are sleeping together, we have a fling!” He looked up from under the blanket and slowly got up. “What do you want from me?” “Deny it, say it’s fake, stop it from spreading…” He pushed her against the wall, blocking her mouth by a rough kiss. “Mrs. Lu, we have to substantiate the rumor.” Before she was born again, what she had been doing was staying away from him! After she was born again, what she always wanted to do was give him offsprings! Lu Xingzhi strived for two personal mottos his entire life: First, it was illegal to undermine military marriage. Two, Jiang Yao was his in this eternity, till death do they part.

Qin Xiaoguo was a successful chef working in the future era. A turn of fate brought her to the past, into a time of famine and uncertainty. Waking up one day, Qin Xiaoguo found herself face to face with a boy who acknowledged her as his mother. Having transmigrated from the year 3024 to 42 BC, Qin Xiaoguo had traveled across a three-millennium time leap to the past. She was transported to a destitute place, and also became mother to a hungry, skinny boy at the same time. Her only comfort to her new-found circumstances was a spatial ring that allowed her to transmigrate—giving her free access to food and other belongings from a different era. After years of raising her son singlehandedly, Qin Xiaoguo had a surprise visitor at her door. It was a man claiming to be her husband, requesting to stay the night. Out of confusion and pity, Qin Xiaoguo let the self-proclaimed father of her child into the house.

Ren, a modern doctor and a secret master magician, suddenly finds himself inside a random book he picked up at the airport...as the villainous older brother of the protagonist. As the bad guy, he's supposed to make life difficult for the Male Lead until the latter grows up and kills him in revenge. However, looking at the broken teenager in front of him, Ren can't help but feel his heart soften. Fang was an orphan who had never known what a family is. Abandoned at birth, all he knew was pain and fear. He loved nothing, and wanted nothing...until he saw the angelic Wade. To save Wade, Fang didn't hesitate to sacrifice himself. ..after all, there was no one to cry over him. But then, Ren appeared and turned his world upside down.

Lucien Blake is a twenty six years old shut in otaku. He live his life reading novels, watching animes, eating and staring at computer all day. One day he went out to buy his favorite chicken lunch box meal at the nearest convenience store. But a robber came in and decided to rob the store. Without knowing why or what for, the robber shot him in the chest before running away.  Can his life as shut in otaku get any worse?    A series of beeps flooded his head, forcing him to wake up. When he open his eyes he found himself in another world very much like his own. Except for one thing. His beloved protagonist from his favorite anime is staring at him face to face. A notif pop into his head saying, [Dear host, find and help the protagonist escape his fate of getting killed. Help him in his mission of eliminating the demons. Points will be added. Failure to do so will result to deduction. Zero points will lead to your death. Good luck.] Lucien was left no choice but to adapt to his life as a mob character, helping the protagonist pave his path into greathood. It was all good at first, if you count off the number of times he has to pick up his butt running away from hideous creatures drooling after his flesh, his life being protected from protagonist halo was awesome.  That is until.... the protagonist pushed him down to bed. _______________________________________________ Updates are on Wednesday and Thursday

In every story, there is a male lead, a female lead and a second male lead. But what about the second female lead? Be it the unloved queen of a cold and distant king, the plain bodyguard of the forgotten prince, the evil stepsister of the well-loved genius, the servant who died protecting her lady or the defeated villainess. No one cares about their stories. This is the playbook of all forgotten second female leads. Volume IV: The Villainess who was defeated by the Gods (completed) 'In every story, there is a villain who has been defeated. What happens to the defeated villain?' After Lorelei's plot to overthrow the gods failed, she was stripped of her power and voice. She became a mermaid bound to a lake, with her enemy (the god) keeping guard of her. This is a story between a defeated villainess and her enemy. Volume III: The evil stepsister who has lived through FIVE lives (completed) 'Please let me rest in peace!' Odette was once an heiress who had it all, be it money, status or fiance. When her perfect stepsister appeared, she realized she was just a villain in this story. Odette, being the evil stepsister, was of course killed off halfway through the story. When she opened her eyes again she was reborn, but no matter what she did, she died in the end. Having experienced burning on a stake, the guillotine, hanging and stabbing to death, all she wanted now was to die normally after a normal life. Volume II: Body guard of a forgotten prince (completed) "You're just my tool. Know your place." It's her duty to follow her master's command. Even at the risk of injuring herself or losing her mind. It's his right to use her cold-heartedly. Even discarding her when she had become useless. She was a bird trapped inside a gilded cage, slowly losing her mind in the process. Volume I: Rebirth of the unloved, forgotten Queen (completed) "Let's break off our engagement. I don't want to be Queen anymore. You don't like me anyway." At twenty, Liana died as she watched her country burned to ashes. When she opened her eyes, she was sixteen again. The first thing she planned to do was breaking off her engagement with Prince Sebastian. This is her story as a reborn queen. -------------- A series of inter-related second female leads' stories set in a fantasy historical world. Readers can choose volumes they like to start with!