Naruto: Konoha's Kanpu - Chapter 52: I Am Your Grandfather

[Harem + Light System + Mystery + Eerie world]After being transported to an unknown realm, Huang Ye unexpectedly obtained a martial arts manual—the Jade Maiden Heart Sutra, a technique meant for women.With no other choice, he followed the concept of opposing yin and yang, practicing the technique in reverse.By accident, he mastered a form of Dual Cultivation. From then on…

A muffled murmur sounded softly,

Crazy goblins ravage the village,

Mutated beasts roam the fields,

The ancient old gods are gradually awakening,

Just when the darkness is about to engulf the entire continent,

A brave man from another world quietly appeared,

This may be the darkest hour before dawn.

Human: “The savior has come?”

Monster: “Have new food arrived?”

Till the fame of the brave spread far and wide,

Walking through every corner of the continent,

He/she/they know,

What is the real darkest hour.

The monsters and humans said in unison:

“I beg you to be human, the ancient gods were so scared that they went back to sleep.”

- Description from novelbuddy

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

Gao You transmigrated into a parallel version of the Northern Song Dynasty in Dream of Splendor. At the very beginning, he married Zhao Pan’er in a grand wedding ceremony.“Pan’er, isn’t your husband supposed to be a fool?” Sun Sanniang asked. “How did he manage to enrage Ouyang Xu to the point of smoke coming out of his ears?”“If brother-in-law is a fool, then there are no smart people left in the world!” Song Yinzhan said.“Can a fool write a medical book for the ages? Can he reclaim the Sixteen Prefectures of Yanyun?” Fan Zhongyan asked.“This is clearly the royal son I lost and have now regained!” The Emperor said.