Inside the Cave of Obscenity - Chapter Volume 1 4: Adventurer 3

The handsome, noble, cold, and ruthless family heir Ignatius Leclair took a liking to the fostered girl Delphine Carter in his home.From then on, the aloof man transformed into a loyal companion, taking care of children, cooking... The entire aristocratic circle was utterly shocked, with everyone envying.Delphine Carter smiled serenely: cunning, energetic, vengeful, a different persona by day and night.[Reading Tips: 1V1, both protagonists are pure, sweet story, the heroine is beautiful.]

In the winter of Taikang Year 3, a girl pays a visit to her future in-laws, the Ning Family of Beiliu, Yangcheng.

After her engagement was denied, the girl decided to hang herself in front of the Ning Family to show them her sincerity.

When the girl who had died opened her eyes once more, many people’s fates were changed forever.

- Description from Novelupdates

Qiao Xuan, daughter of a county magistrate, supposedly had a fiance that everyone envied. But then her father’s legal wife schemed against her, and married her into a farmer’s family. On the night of her wedding, after seeing how shabby her room was, Qiao Xuan hung herself. When she opened her eyes again, a different Qiao Xuan had transmigrated onto this body.

The new Qiao Xuan stared at her husband and frowned after seeing how shabby the house looked. “Don’t worry. I know that you didn’t want to marry me, so I won’t touch you. I’ll apply for a divorce tomorrow and give you back your freedom.” But wait, Qiao Xuan hadn’t figured out what was going on yet! She couldn’t get a divorce, or else her father’s legal wife wouldn’t forgive her. Also, she was a woman of a different world and possessed special powers. Couldn’t she just build a business from here?

So it was decided. Qiao Xuan began assisting her husband and slapped the faces of all who wronged them. They kept leveling up, and went from being a poor farmer’s family to becoming the richest family in the area. Those who bullied her regretted their actions, and her husband had regrets too. “I never said I wanted to divorce you.” Qiao Xuan was perplexed when he was pressing her down on the bed. Why did he suddenly decide against getting a divorce?

My childhood friend went to the academy.