The 9th Class Swordmaster: Blade of Truth - Chapter 9: The Nature of Magic

The six prefectures of Zhongbo were offered to foreign enemies on a silver platter, and Shen Zechuan was taken into custody in the capital, reduced to a drowning dog—loathed and condemned by all.Xiao Chiye followed the scent of the furor and made his way over. But instead of setting others on him, he kicked Shen Zechuan with his very own leg, rendering the latter an invalid. Who would expect this invalid to turn around and bite him in a counterattack until he was all drenched in blood?That was the start of an epic feud between both men who tore at each other every time they come face-to-face with one another.“Fate wants to bind me here for life, but this is not the path I choose. The yellow dust submerged my brothers deep under. I have no wish to bow in submission to an illusory fate. The imperial edict can’t save my troops, and the imperial court can’t fill the stomachs of my mounts. I’m no longer willing to lay down my life for this purpose. I want to surmount that mountain. I am going to fight for myself.”Note: A ‘drowning dog’ is someone who is down and out, having lost favor or power.

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.

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

My grandfather is very eccentric, performing daily rituals of offering incense to himself, standing in front of his own spirit tablet and eating candles.Villagers are fearful of my grandfather.I am fearful of him too.Later, I discovered that what they were afraid of was not my grandfather, but me.Even grandfather is afraid of me....My name is Chen Shi.The Chen of honesty, the Shi of sincerity.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates