The Simple Life of Killing Demons - Chapter 2Book 1:

Cho Ryu Hyang was good at math from a young age. When he enrolled into the The Theoretical Maths and Martial Arts School, the teacher, Jo Gi Chun, recognized Cho Ryu Hyang’s talent immediately and took him in.

An ordinary young man reincarnates as Adrian, the eldest son of a once-prominent noble family now living out in boonies of the kingdom. Watch as Adrian embarks on a tantalizing journey, to support his graceful and caring mother and feisty older sister, as a man should, with his seduction system.

In order to take away her father’s shares, her husband colluded with her bestfriend to set her up. A divorce was thrown at her face and she was forced out of the house.

Four years later, she returned with an adorable treasure. With his hands wrapped around her waist, her baby son said, “Mommy, I heard that it’s the trend now to have a godfather. You wait, I’ll find one to support you!”

A few days later, her son brought back a super handsome guy who looked exactly like him.

“Mommy, don’t worry, I’ve checked. Dad ranks first on the world’s richest list and is able to deal with all kinds of disapproval!” Her son said confidently.

Cheng Liyue: “…”

Looking at the startled woman, Gong Yexiao coldly threw out a paternity test, “Woman, when did you steal my seed?”

Cheng Liyue was furious. Which bastard was it who slept with her four years ago but did not assume responsibility for it?

- Description from Novelupdates

The scum’s or villain’s long road of transformation was tentatively set to the world:
The abandonment of the educated youth’s wife (Completed)
The hidden marriage of the scum film emperor (Completed)
The best brother in the world (Completed)
The Phoenix male who destroy the bridge after crossing the river (Completed)
The treasonous general (Completed)
I’m an honest man (Completed)
To become the top scorer in the School of Agriculture (Completed)
The soft rice man’s self-cultivation (Completed)
The whole world is reborn (Completed)
I want to survive on a desert island (Completed)
The stallion male who has seized the opportunity (Completed)
The perverted self-salvation (Completed)
The spring of the loafer (Completed)
The misplaced life (Completed)
The miser career (Completed)
The ghost is out of feeling (Completed)
The Queen’s favorite husband (Completed)
The vicious girl with her godfather (Completed)
I want to be a good person (Completed)
I does not tear up the family (Completed)
The perverted common plant (Completed)
The Mary Sue’s men (Completed)
Every time I was reborn, someone wants to kill me (Completed)
The old people’s counterattack path (Completed)
The global evolution (Completed)
When I became a net red (Completed)
For you, good person (Completed)
His heart had white moonlight (Completed)

- Description from Novelupdates