Oops, I had a ONS With My Secret Ex-husband - Chapter 14 Why?!

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Everyone said Su Xiaofeng from Lihua Village was lucky, despite having two kids to drag around, she still married a big shot from the Imperial Capital, making everyone green with envy.But the truth was this:In the 21st century, Su Xiaofeng, a leftover woman who started her own business, died unexpectedly while pregnant and was reborn into the body of a village girl from the 1990s.Right after arriving, she discovered the shocking news that she was pregnant.Touching her chin and then excitedly patting her stomach, Su Xiaofeng said, “It's like finding what you've been searching for without any effort at all.”To ensure that after the baby's birth, she could do whatever she wanted, Su Xiaofeng rolled up her sleeves and got to work, and by accident, she obtained a Spiritual Mirror, renowned for its wealth and beauty.From then on, she went further and further down the path of stepping over Lianhua, tearing apart local thugs, torturing her unkind mother, and beating up big shots... wait, no, on the path to getting rich.Only, her twins were beginning to look more and more like a certain big shot from the Imperial Capital.This story is fictional; rigorists beware!

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!