I have an Apocalypse City - Chapter 1 - : Entering the Game

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 ͡°)

Gu Nianshen had thought all along that he was raped by an older lady five years ago when he got really drunk at a nightclub. When he met a child who resembled him and Lin Yiqian, he carried the child in his arms.

Jin Yang received a birthday present at the age of 20. He received a baby wrapped in a blanket and placed it in a box. The paternity test results told him that this was indeed his child.What? What did that happen? In Jin Yang's memory, he had never had sex with a woman. How did this child come about?Lin Shenshen had gotten pregnant before marriage and was despised by her family. She had liked Jin Yang for many years, but one day, she disappeared. She would never pester Jin Yang again and stop him from getting close to other girls.Jin Yang gave the child a name. He realized that this brat was very smart, but his personality was becoming more and more like the girl in his memory.Six years later, at Lin Shenshen's lowest, Jin Yang found her along with his son.“I'll find you a beautiful stepmother.”“What about my own mother? Is she not as pretty as this young lady?”Lin Shenshen picked up her son and kissed him on the cheek.“Where did this child come from?”“Baby, let Mommy tell you—you were born in Mommy's dream!” The couple, Lin Shenshen and Jin Yang, kept teasing the little kid.Jin Yang, “Honey, why don't you elaborate? How did you give birth in your dream?!”