I Attained Invincibility In The Real World - Chapter 12 - : Practice and Great Upgrade

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

[Powerfulcouple]The entire Yong City knew that Eldest Miss Su of the Su Family had a malicious nature and a scandalous reputation, acting outlandishly day after day, much to her family's disgust.Worthless dad: “I certainly do not have such a daughter; my only daughter is Xinyan.”Old Madam: “Shameless thing, you've completely thrown the Su Family's face away.”White lotus younger sister: “I'm sorry, Sister, we were never people from the same world.”Scumbags: “Trash that can't show their face in public, lowly people don't deserve to enter our circle.”However...Before Eldest Miss Su had expressed her opinion, various bosses couldn't hold back any longer.A certain Film Emperor: “Picking on my boss—tired of living, are we?”A certain Association: “Mr. President, please instruct, bankruptcy or banishment?”A certain Group: “What's the Su Family? Not even worthy to carry the BOSS's shoes.”Bigwigs from various fields: “Hello, sister-in-law!”Su Ran: “?”While the outside world was marveling at the continuously revealed identities of Eldest Miss Su, the man who was legendary for his mystery and restrained self-discipline swept her into his embrace.“Little ancestor, is there any identity of yours that I don't know about?” the man's voice was seductive, lazy, and casual.Sister Ran curled her red lips slightly, smiling brightly: “Your wife.”

There’s the so called class transfer.

Among the high school students that were given cheat abilities, Kirishima Ran was given 『Underling Training』for some reason, a skill that can make a woman a slave.

Ran who was driven out by the kingdom using an absurd reason will make use of the given skill freely to take revenge on his classmates, release his desires (This is mainly the reason), and fight off the world’s system.

It’s a story of him using his wonderful skill making his classmates turn to an obedient cute and lewd slave.

Dani was just an ordinary high school student—until fate played its cruel hand. After losing his parents at 15, he was left alone in the world with only money to his name. Neglecting his health, he developed cancer, and while waiting for death in a hospital bed, he found solace in novels, manhwas, and manga.He often cursed the weak romance in harem stories, where the MC had power and a harem but did nothing while the women fought over him. But one novel captivated him—a masterpiece about 100 heroines, each with tragic pasts, rising to the top of the world. It wasn’t about an overpowered male protagonist but about the struggles and triumphs of these heroines.“If only I could transmigrate into this world and marry them all...”Then he died—and woke up inside the very novel he admired.But not as the protagonist. Not even as a major character.Instead, he is reborn as Dani Everhart, one of the many sons of the king, a forgotten prince with no real power or influence. He is wealthy but not a contender for the throne, overshadowed by his brilliant older brother. However, he has one advantage—his knowledge of the story.He knows the heroines' hidden pain, their struggles, their tragedies.And he refuses to let them suffer.With no grand ambitions for power, Dani sets his sights on a single goal—to make each of these women fall in love with him, forming the greatest harem the world has ever seen.But as Dani gathers heroines by his side, his actions begin to change the story itself.And soon, the world will realize—this forgotten prince is no background character.He’s about to rise.