One Piece - I Am A Different Luffy! - Chapter 403 - 402 - Kingdom of Prodence 02.

Kellen Woods grew up never knowing a normal world. By the time he could walk, his mother and father had already sealed several serious gates that threatened the safety of his hometown. By the time his sister was born, they were famous worldwide.So the world held their breath for when Kellen and his sister came of age, waiting to see what kind of power they would awaken.His sister was just like his mom, same power, same class, while Kellen, woke up one day to find out what it meant to be special in a family the world watched. But in the worst way.Awakening weaker then your powerful parents wasn’t unheard of, but when your younger sister awakened at the same class as your parent, anyone would feel inferior. And Kellen, never one to ask for hand outs, left the comfort and safety of his hometown to become better than the weak brat everyone thought he was.Kellen went to the front lines, to where the gates normally broke out. From there, Kellen worked hard, and then worked some more until no one could doubt that he was good at his job. He got so good that even with his lower class, people would still hire him to help. But Kellen never took it to heart. He had learned a valuable lesson on the front lines. Classification only meant shit if you walked back out of the gate. Otherwise, shut your mouth and listen to those with more experience. They determined who made it out alive or not.But Kellen was tired now. He had gotten everything out of his system, and the fast paced life on the front lines didn’t suit him anymore. Now, he wanted to go home, buy a house, maybe find a nice man to settle down with, and live a normal life.All the while, the yellow eyes he’d met on the front lines haunted him, no matter how much he tried to forget about them.Especially since the Esper they were attached to refused to let him go.

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 ͡°)

This story unfolds during the later stages of World War II, where a man, scarred by the horrors of war, finally grasps the profound and harsh realities of the world. In this world, those at the top laugh and celebrate, while those at the bottom sacrifice their lives in futile conflicts driven by pride and meaningless ambition.A modern soul transmigrates and fuses with the original soul of a body, creating a unique and extraordinary existence. To some, he is a villain; to others, a madman.In a world steeped in cruelty, this man, determined to secure a place among the decision-makers, struggles to break free from the ranks of those powerless to control their fate. To achieve his goal, he resolves to shatter the chains of law, then the chains of morality, and finally the chains of mediocrity.