Life Simulation: I Caused the Female Sword Immortal to Regret Forever - Chapter 12:

Shao Qing’s only regret in life is that she blindly fell in love with a worthless man. She gave up everything for him, but in exchange was run over by his conniving mistress when she was close to her delivery date. Fortunately, Heaven left her a way. Crimson rain fell from the sky, the end of the world arrived, she resurrected in the morgue and gave birth to a little monster. Turning into a half human, half zombie freak; her son neither human, nor monster; they have no other choice but to rely on zombies’ crystal nuclei to develop their special abilities and continue living. This debt, she’ll definitely repay that cheating couple!

- Description from Novelupdates

In her former life, she was robbed of her status, her looks, and her reputation.

“They said the world would fall without me.”“They said I was the strongest.”“Then they buried me with honors... and a blade behind my back.”Remiel St. Clair, humanity’s strongest exalt, prince of a once glorious empire, was betrayed and buried.Nine centuries later, he awakens in the body of Lucien Callastre, the second prince of a kingdom descended from his own treacherous bloodline.Stripped of powers, but not of pride, he must rebuild his lost strength and rise to power yet again to fend off the ever-growing threats of the spirits.The maw is growing.The spirits are returning.But so is he.And this time, the Exalted Prince is not dying quietly.

On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, he lands on a Grappler Wyvern and manages to tame it.

Tsuchio decides just like that to live in the other world, the reason for his quick decision: he wants to make a monster girl harem.