10 nen goshi no HikiNiito o Yamete Gaishutsushitara Jitaku goto Isekai ni Ten'ishiteta - Chapter 2, Yuuji a “Loner-NEET” Evolves into “NEET”, Part 1. Yuuji, Annihilating Encountered Goblins

(Chongwen, strong men and women) On the wedding day, her husband stabbed the knife of betrayal into her heart with his own hands,

“Did you know? The person who saved you back then was not me, but the sick child who first asked Tian!”

Only then did she know that she had been in love with the wrong person!
In the raging fire, she vowed like a ghost:

“Sikong Hao, I swear to God that if there is an afterlife, I will seize your imperial power and destroy your country!”

Opening her eyes again, she found that she was actually reborn on the body of Bei Gongxue, the number one waste material of the Bei Gong family.

Clenching her fists, she hooked her lips and sneered: This time, she will not be blind and love others wrongly.

To the person who harmed her, she directly tramples on it, and to the person who loves her, she swears to protect her to the death, and she will never let him suffer any more grievances!

When the waste material turns over, when the sick king no longer hides his strength, their love is destined to be vigorous, so that the world can only look up!

But when the world said that Princess Xuan was arrogant and ruthless, and her wrist was bloody, he said: “My love is the biggest capital of your arrogance and domineering!”

- Description from novelbuddy

Dual cultivation isn't a choice; it's a necessity.

After being struck by a truck like most lucky protagonists (or unlucky ones), Vaan found himself transmigrated into the body of an orphan in the world of witches and demons.

However, they didn't always exist.

Demons terrorized the world ever since the Gehenna Realm descended over 300 years ago. but along with them, came mana, giving birth to witches to combat these demons.

Since then, the world of men was dominated by witches, establishing the seven witch kingdoms, which safeguards at the forefront of the demon invasion.

In order to survive in the matriarchal society of the witch kingdoms, Vaan, like all other men who cannot use magic, had to learn how to service the witches to survive.

Nevertheless, it did not come without its own benefits.

Years of research have led the world to the discovery of intimacy between men and women could increase the witches' mana absorption.

But at the same time, men could absorb some of this mana to improve their physique and lifespan.

Thus, since then, an intricate relationship was formed between men and witches in the red-light districts. Love became casual, and dual cultivation is common.

As a prodigy in the art of pleasing women, Vaan lived a smooth two years since his transmigration as an orphan.

However, everything came crashing down in a heartbeat one day when his life was nearly taken, and Lady Eniwse whom he served went berserk.

Even so, that was not the end.

With the awakening of the Witch Hunter System, watch how Vaan takes on the world and becomes the lord of witches.

=====
Note: Contains lemons.
Hunting witches does not necessarily imply killing witches if you know what I mean ( ͡° ͜ʖ ͡°)

When the goddamn story leaves you no choice but to walk the path of the villain,The heroes aren't enough to save the world, as the calamity ultimately kills everyone and everything.Then, only by becoming the demon king can you survive, and only the demon king can save the world, but how?Of course, by conquering every other race, obviously.Can Axel become the demon king and survive, maybe save the world in the process?

A normal person, Xin Yun, received a second chance by transmigrating to an unknown world. But because he chose to indulge in women, he lost his chance to become the most powerful.

When he gets caught by the force a struggle between the nine most powerful experts, something unbelievable happened, or it could be said that a miracle occurred. Xin Yun was reborn and sent back to the place he had transmigrated over to.

Having been reborn, Xin Yun decided he wanted to become the strongest being together with the three top experts from his previous life: the most beautiful dragon- Sparkling Butterfly, Yi Luo Xiang, the cruel dragon- Evil Empress, Yan Qing Ying, and the most dazzling dragon- Peac*ck King, Ming Xuan!

Furthermore, he wanted to pursue love with the most beloved person from his previous life- Yi Luo Xiang! Xin Yun, making use of his good fortune, used his memories from his previous life to prioritized becoming friends with Yi Luo Xiang, Yan Qing Ying and Ming Xuan. He even received a godly artifact from his previous life- the Heaven Splitting Axe!

- Description from Novelupdates