After the Marriage, I Hid Commander Gao Leng Privately - Chapter 516:

Every player had the same starting resources.Everyone could choose to explore 10 rooms every day. One room could be dangerous while the other might contain resources.Players must do everything they could to survive.After he finished reading the instruction, Li Zheng heard a voice next to him. “Selecting a random daily reward…”“Congratulations. You have obtained a silver chest that contains a silver-grade blueprint for the Ordinary Detector, and a few other resources.”“Congratulations. You have obtained a bronze chest that contains a bronze-grade blueprint for the Air Purifier, and a few other resources.”“Congratulations. You have obtained a platinum chest that contains platinum-grade blueprints for the Ionized Knife, Intermediate-grade Genetic Cultivation Liquid, and TJP Shield, and many other resources.”“Congratulations. You have obtained a hyper legendary chest that contains…”Li Zheng looked at the colorful chests in front of him and grinned.

Joe finds himself kidnapped by aliens, shot at a planet inside a metal ball with a parachute strapped to it, and dumped on a planet full of people who can't speak with him. Now he has to figure out where he is, who captured him, why he was sent here, and, if possible, how to get back home!Great forces move as a young man finds himself suddenly taken from home by a strange people to explore a strange land. He does not know he is to explore nor does he even know who has taken him or why. Joe struggles to survive in a strange world of unusual peoples and cultures but his experiences prove to the task. Many learn from him just as much as he learns from them.Joe learns of the world, of the strange forces within it, and gains friends and a new family along the way. He will be ground to nothing, but will find himself once more.

Mu Yangling was reborn in the family of Orion. He thought he could live a simple and happy life. Who would have thought that a military disaster had nearly destroyed their family. His father was classified as a military household, and their family accompanied them to farm the fields.

Unfortunately, they could not even tell the seedlings of grains. Qing, looking at his mother and younger brother who were about to cry without tears, Mu Yangling raised his chest and said, “It’s okay, I have the strength” and some agricultural theoretical knowledge from a thousand years later.

- 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.

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