Supreme Tamer - Chapter 18 - : Chapter 18: Encountering a Great Enemy by

Going for a swim, she ends up in an ancient wild Beast World and ends up being brought home by a handsome wolf.
She wants to stick to the handsome wolf, stock some salt, farm some land, look at some handsome men and grow old like that, but the handsome wolf pounces on her every day.
What? He wants her to have babies?
NO~ NO~ NO~ There is no happy ending to interspecies marriages, hurry and let go of me handsome wolf~

- Description from Novelupdates

The world changed the day that cracks appeared in the sky– suddenly monsters named『Demonic Beasts』appeared and began to rampage, attacking people.

Meanwhile, girls called『Magical Girls』began to appear to counter the demonic beasts. As they defeated the demonic beasts, gradually people’s lives gained a semblance of composure.

–but when there is light, there is also darkness.

In the corner of an alleyway, a boy who had been attacked by a demonic beast was dying. His voice begging for help did not reach anyone and his body refused to move.

「Boy. Do you want to be saved?」

Looking into the boy’s face, a black cat began to speak to him.

The boy nodded firmly to the devilishly sweet invitation, in response the black cat mocked him.

「Is that so—then I’ll【Haunt (Save)】you」

—on that day, a『Magical Girl』was born in a place that no-one knew.

『She』never laments, no matter what the future may bring.

The heiress to a powerful tech company, Diane Lily Hoffman, had a tough childhood filled with lies and mistreatment.At 14, her cruel stepmother tricked her into thinking her father had sold her to his enemies. From there, the family who adopted her abused her physically and emotionally.Using her as a ploy to get rich, her adopted family forced her into what she thought was a loveless marriage with a plastic surgeon named Gabriel.Despite what she perceived as a lack of love, she found solace in her married life until her path was chosen for her again and lies were made to drive a wedge between her and Gabriel.The divorce was painful and she realised all too late that everything was not what it seemed.Unfortunately, the lies her family crafted were too much for Gabriel to ever give her a chance again.Just as she was about to die, Diane was given a second chance to fix her mistakes.Now reborn, Diane is ready to find her real father and ex-husband, seeking revenge on the family that betrayed her and taking back the life and justice she deserves.

Among the demons, the supreme ones are called “Great Saints.”

A young man leaves his mountain village and travels around the world. By unceasing efforts, he finally becomes a legend of the age.

- Description from Novelupdates