MTL - Full Marks Hidden Marriage - Chapter 5 Little Master found it.

When Gao Ge is awake, he finds that he has returned to the earth before aura reappeared. The world will usher in an era of practitioners soon. Various schools of cultivation and families of ancient martial arts will spring up. As a man who is living a second life, Gao Ge will never let go of the chance to grasp the resources, cultivation methods and treasure places first.

In this era, there are many geniuses and I, Gao Ge, shall be the king of them.

- Description from Novelupdates

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 ͡°)

Mysterious occurrences loom; the entire world dramatically changes.The fate of individuals and nations becomes bound to AnalogHorror (rule kaidan), and once the chosen of destiny fail, it means countless people in their corresponding nation will be slaughtered by the strange phenomena.The entire world falls into unrest, panic, and despair.Until an absolutely unexpected individual joins the AnalogHorror game.Xiao Yiwang glanced at the weird world before him and then at the examination admission ticket in his hand.“Have middle school entrance exams always been this complicated? Well, it does prove my intelligence!”“I am retarded, but selected to join the analoghorror game?!”

Sick white cat princess x drama spiritual doctor concubine, 1v1
The daily life of cats that attack and pet each other

In the fifth year of Liu Fenyun’s passage, she became the concubine who was sent to a foreign country for marriage.
On the night of the wedding, she found out that her new wife was actually a big white cat!

just married
Liu Fenyun, who has never raised a cat: This is too much of a test for me.

one day after marriage
Staring at the white cat princess who was waiting for the good night, Liu Fenyun suddenly asked, “Your Highness, can you turn into a cat and let me rub your hair?”
Princess White Cat: “…”
She kicked the cat slave off the couch.
–
After taking the seventh princess who died of illness, the big demon Lianyi became a “sick cat”——
Both physically and mentally ill, like a glass hedgehog, extremely fragile, but anyone who dares to approach will be wounded with blood by her sharp thorns.

She hated the human race, and she hated it to the core, but she didn’t expect that the king would give her a marriage on paper and let her marry a foreigner who came to marry.

Lianyi wanted to start a killing spree, but the concubine who lifted her red hijab was actually a girl disguised as a man. He smiled at her at every turn, and kissed her softly, making her unable to do anything.
–
The little concubine is a genius doctor who takes medicine to cure the disease. Lianyi took the medicine she prescribed and gradually recovered her body, but she lost her heart and went crazy.

– This is her medicine, her sugar, her destination.

“Your life is mine.”
“Don’t betray me.”
“Don’t touch other cats.”
“otherwise……”

“Okay, okay.” The little concubine pinched the cat’s paw she raised with a gentle smile, “Your Highness Duyi.”

【Introduction to the pit】
1. The system uses soy sauce, the main emotion.
2. The white cat princess is a sick and weak girl.
3. The world view is an overhead ancient, the former and middle periods are dominated by the palace, and the latter period is dominated by fantasy.
4. There is a sub-cp plot.

The cover is set for the protagonist, thanks to the artist @yemiao not eating carrots

Content tags: A soft spot for crossing time and space system cute pet
Search keywords: Protagonist: Liu Fenyun, Lianyi ┃ Supporting roles: Luo Binglun, Yu Qingyue ┃ Others: If you have bought Volume 6 and haven’t read it, or if you haven’t bought it yet, don’t read it, the entire Volume 6 will be reset. Change a chapter to replace a chapter, the fate and identity of some supporting characters will change, and the plot of the abusive will also change. If the guest officer is still reading, please stop for a while and wait until I finish it.
One sentence introduction: His Highness the cat always wants me to suck her
Conception: Hanging the pot to help the world, both mind and body heal

- Description from novelbuddy