MTL - Start the Source of Fire and Create a Mechanical Army - Chapter 420

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
- English is not my first language, so there would be grammatical mistakes in this story.
- Please give my story a proper review.
- I accept a suggestion, but no spam!

“I shall fuck every woman's hole and mouth until I become the undefeated vampire lord of lust!”

With a demoness of lust fell on his boner, Zoravec, a 19 years old seemingly human struggled to keep his carnal desires in control.

The only one way to find his mate is dual cultivate with every single existing woman! But things go wrong when his vampire blood activated the bloodlust, and his first sex partner dies of blood loss.

Zoravec has no bloodline due to his mixed blood. But his power outbursts are no match for other vampire nobles. Especially with the huge harem of beauties who possess every kind of lethal power, who are at his beck and call.

What chaos will the hatred towards his own kind bring?

On an apparent normal Sunday, Luke suddenly woke up after hearing a voice warning him of something weird. After assuming that it was just a bizarre dream, he felt an earthquake that nearly destroyed his dormitory. As if things weren't odd enough, a zombie suddenly appears in his room and targets him.Somehow, Luke survived several encounters against the zombies thanks to his skill Weapon Augmentation, but then he suddenly finds a mini-sized elf and a mini-sized dark elf telling him that they want to help.After a stranger offer, Luke learns that something very big is happening with the planet, and now he will have to find the strength to fight against zombies and all kinds of weird creatures that want his neck... he will do all that while avoiding being tempted by those two very suspicious elves.The story, all names, characters, and incidents portrayed in this production are fictitious. No identification with actual persons (living or deceased), places, buildings, and products is intended or should be inferred.

Xu Mo, a modern high school student was sent back in time to Jing Kingdom and found herself trapped inside of the body of a princess with the same name.

She had barely recovered when she learned of an unparalleled fiancé and in a daze, they got married. Then the stunning genius physician who normally does not pay attention clamoured to marry her. After that, there was a cold general, a flirtatious lord, a tsundere young master……

As it turns out, this was a male-dominated dynasty. Because the female population was sparse, the entire nation shared wives regardless of rank or nobility. Is it feasible for someone who wants to maintain monogamy in this dynasty?

- Description from Novelupdates