MTL - First Evolution - Chapter 14 Horror biological weapon

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

Talismans are a part of cultivation and what a better way to get into cultivating than to have the three top sects send talismans around.The “good” sect sends a talisman to make someone extremely beautiful.The “bad” sect sends a talisman to make everything around the person turn into a death sentence.The “neutral” sect sends a talisman of amplification by accident.What happens to a woman who has just gotten pregnant?Everything hits her belly.Join in as Rex who is in the fourth mortal realm gets a second chance to cultivate.

only led to his death.But fate had other plans.Reincarnated as the son of the strongest being in existence, the Demon King. One might expect him to resist, to rebel against the Demon King and kill him once and for all.But why bother?Being the good guy led to nothing but betrayal and death. This time, he'll live for himself. Women, pleasure, power—he will claim it all, as any true demon would.

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!