One Piece: I'm Destined to Be the Son-in-Law King! - Chapter 26: Kuro of Hundred Plans!

Transmigrated into a novel after her death, Su Jin has an engagement with Lu Xi, the legendary and unrivaled male protagonist, that was arranged between their families. After the revelation of her identity as the adopted daughter swapped at birth, she had no right to the engagement; that belonged to her sister, the female protagonist. In fear of interfering with the novel’s ending, she avoids him… But why is he ignoring the female protagonist and chasing her instead!

The Perfect Fiancé Code:

1. Support his fiancée

2. Unconditionally support his fiancée

3. Protect his fiancée unconditionally regardless of who or whom is present

Lu Xi felt that he should be able to accomplish this.

Su Jin: QAQ, please don’t do this…. I’m supposed to be the cannon fodder sultry ex-fiancée that you were going to dispose of!

Lu Xi: I have always been waiting for the moment that the 22-year-old Su Jin, you, would finally open her eyes.

- Description from Novelupdates

Feng Lingxi was the traditional family’s head mistress – a person with a charismatic yet sly personality with the ability to attract people easily to her side, and having the potential to take someone’s soul away. Crossing across boundaries from a decade ago to now, a world that gives woman full respect and acknowledgement….

Don’t be fooled by her, because she was someone who would act obediently in front of a crowd but, stabs them in the back when necessary! Disguising as someone that would gain her trust and belief! That was why the Emperor of Xian started doting on her, allowing her to become absurdly daring to do whatever she liked. This made the Empress speechless to tears.
That would be the cause of the kingdom’s downfall in the near future…

- Description from Novelupdates

Oosuki Masato is an ordinary high school boy who is magically transported to an alternative world, but for some reason his doting, over-protective mother comes along as well.

Marcella Valemont was a villainess wrapped in silk and thorns.The alluring, selfish daughter of the High Priest, she was forced into a cold marriage with the Black-bellied Duke Berith Montclair. She longed for power and would stop at nothing to claim the crown, even if it meant seducing the incorruptible Crown Prince Lucian and clawing her way to the throne into becoming the Queen.Until it all burned.Her ruthless schemes led to betrayal, rebellion, and ruin-- an empire on its knees, a virtuous king destroyed, and a rebellion led by the man she discarded. Desperate and full of regret, she barters her life with the Duke to save Lucian.In an interesting turn of events, Marcella gets to go back in time to fix her wrongs, save the man who was ruined because of her and hopefully stop the bloodthirsty rebel Duke Berith.She finds herself reborn as her 18-year-old self with a chance for a do-over and vows to do better this time.But the past does not forget. Nor does the devil in her husband’s skin.Secrets long buried begin to surface, and Marcella discovers that her former husband is far more than he seems—a man cloaked in darkness, harboring a purpose that threatens everything she holds dear.They say second chances come with thorns and to fix the past, she must trust the devil who destroyed it.