Hogwarts: Even Voldemort Can't Stop Me From Studying - Chapter 32: The Best Decision

To reward Meng Fan for his bravery before his heroic death, the cosmos rewarded him with a ‘system’, sending him back in time to three months ago, alive.

- Description from Novelupdates

After sacrificing his life to save another’s, 24-year-old Ryan Ray is pulled from his mundane world and dumped into a realm teetering on the brink of all out war.Tasked by a cryptic, angelic ‘spirit’, he’s given one job: protect a fragile world from a mysterious prophecy. But thanks to the spirit’s charmingly incompetent assistant, Ryan is dropped into the wrong world, a much, much more dangerous one.Will he rise to the challenge and become the hero this plant needs?Probably not. He’s just a human, after all.

This novel is also known as Master Fu's Mysterious Darling Wife

She is the The Young Miss of Military family Shen, her face is peerless, her temperament is cold, and she is her family’s treasure, but isn’t accepted as one’s child by her mother;

He is The Sole Heir to the top giant Fu Family, his power is unparalleled, indifferent high-born, the captain of the mysterious military force, and the youngest commander-in-chief.

Because of her grandmother’s wishes, she married him at lightning speed. She thought that it was a marriage that she needed, but she didn’t expect to be greeted with his extreme pampering.

- Description from Novelupdates