One Piece: King of the World - Chapter 407: Reorganizing the World Government’s New Structure

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Mu Yangling was reborn in the family of Orion. He thought he could live a simple and happy life. Who would have thought that a military disaster had nearly destroyed their family. His father was classified as a military household, and their family accompanied them to farm the fields.

Unfortunately, they could not even tell the seedlings of grains. Qing, looking at his mother and younger brother who were about to cry without tears, Mu Yangling raised his chest and said, “It’s okay, I have the strength” and some agricultural theoretical knowledge from a thousand years later.

- Description from novelbuddy

Coming from one of the richest families in the world, everyone wanted something from her, and Cora felt she was never loved in all of her life. Desperate to find true love, Cora got married into a pauper she took a liking to and secretly helped him rise to the top. She pretended to be disabled and poor in order to prove to her family that he was a good man, but on the day she planned to reveal her identity to him, she found him cheating on her on their bed.Filled with so much rage, Cora vowed to crush him piece by pieces.Being this heartbreak. She vowed to never love again as well, but it felt like the world was waiting for her to be single because the moment she became single.Over a Battalion men wanted to marry her.