Arifureta Shokugyou de Sekai Saikyou (WN) - Chapter 407

In 2036, humankind steps foot on Mars for the first time.

The day she transmigrated it, she was already the wife of two men. She later became the Queen of the country. Her life has been cherished by seven men.

Once again, Ye Zhen Zhen had lost her memories. When she opened her eyes once more, arranged in front of her were——

1. A Maternal Grandfather, the Murdered Victim

2. A Large Inheritance

3. A Deeply in Love Fiancé

4. An Overbearing Maternal Uncle and his Wife

5. A Docile Servant

6. The Aloof, Cold, Abstinent Doctor in Charge of the Case

7. A Seemingly Difficult Police Officer

Reincarnated as a detective, Ye Zhen Zhen stared dubiously at them all. Who was the murderer? Was it her? It…?

Only one was the real murderer, but there was far more than just one culprit.

- Description from Novelupdates

She was originally the young miss of the Marquis Estate, but became a peasant girl due to a mixed-up at birth.