System Bestows me with Immortality, Living on to Eventually Become Invincible - Chapter 29 – We cannot determine this world and this environment

When powerless, unfavoured Princess Soleia was arranged to marry the newly titled Duke Orion Elsher, she assumed they would find love eventually.Who knew that her father would send off her husband mere hours later to fight a war?Soleia was left alone to deal with an impoverished fief, a crumbling estate, and spiteful, vindictive relatives of the Duke who all wished to see her gone.She couldn’t leave― there was nowhere else to go. Soleia desperately wanted her husband to return so he could offer her a helping hand. However, when he did, he returned with Elowyn, a woman he claimed was his true love.A woman hellbent on taking her place as the rightful Duchess, no matter what she had to do to get Soleia out of the way.Mistreated, misunderstood, and miserable, Soleia was eventually thrown out of the estate she helped build.Fortunately, when one door closes, another one opens. Unknown to Soleia, a man more powerful than her husband had been watching her, waiting for the right time to snatch her into his gilded cage. Duke Elsher had been foolish to let go― but the crown prince of Raxuvia wouldn’t make the same mistake.***Prequel to Stolen by the Rebel King.

Evan crossed over, but he wasn’t worried at all… because he had the character template from the mobile game and five devil fruits obtained from a lottery draw with him.

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 ͡°)