Only Sense Online - Volume 9, Chapter 5 - The Sewers and Rat Extermination

Collapsed without warning, and upon awakening, he found himself back in his childhood.He thought it was a blessing from above, but unexpectedly, tumultuous changes ensued, shrouded in mystery...

Shi Yuhan is the most heartless and evil human Song Qinghuan has ever met. He's arrogant, sharp-tongued, ruthless, and heartless towards her. Yet, he asks (read threaten) her to marry him and she has no choice but to agree. She needs to get into the Era Group to investigate her elder brother's whereabouts.Will her sacrifice be worth it? Will she be able to find the truth of her elder brother's disappearance? Will Shi Yuhan continue tormenting her? What's his motive?

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Betrayed. Broken. Abandoned. When Athena is cast aside for Jesse’s former lover, she loses everything—her mate, her pack, and her unborn child. Left to die, she’s rescued by Kieran, a powerful rogue Alpha who turns her into a warrior. Now, she’s back—not for love, but for vengeance. But as war ignites, so does an unexpected bond with Kieran.