One Piece: Fist of the World - Chapter 10: Trafalgar Law

After transmigrating into a fantasy game world, Ye Anping became an unknown cannon fodder with low qualifications who was destined to die tragically at the hands of a villain at the age of fifteen. So, he was a little desperate.

Fortunately, he was only four years old now, and there was an cannon fodder younger sister with excellent aptitude by his side.

Ten years later, the junior sister had grown up, becoming not only beautiful but also stronger. She caught the attention of the protagonist.

And then Ye Anping became fed up with the whole situation.

Ye Anping: “Junior sister, I am your senior brother, stay away from me!”

Junior sister: “Protagonist, I’m just an ordinary person, stay away from me!”

Protagonist : ” I am wholeheartedly devoted to you Lady…”

Theatrical regression life of an old-fashioned villain (kkondae) who recalled his past life.

“There’s nothing I wouldn’t do for a better life.”

——

Survival in the ‘Otherworld’; a place where only the insane can set foot in.

An engagement paper to lock one’s destiny. With her family facing financial difficulties, she marries into the family of the richest man in Qingzhou as his wife. Her Mother-In-Law’s doubtfulness; her husband’s childhood sweetheart; her mean elder sister-in-law; her narrow-minded younger sister-in-law… Being inferior, Sang Wan withdraws without a choice. As time passed, she ended up being lonely and died tragically.

Reborn on a sedan chair, how shall she proceed? Standing right at the cause of the tragedy when everything restarts, can she change her fate and find her beautiful melody?

- Description from novelupdates