MTL - I Have a Store In the World of American Comics - ~ One thousand four hundred and thirty-three

In the vampire-ruled kingdom of Mildelar, the Blood Games stand as the ultimate form of entertainment—savage battles between familiars, humans bound to their vampire masters through blood pacts. Far more than mere spectacles, these brutal fights determine the prestige of noble families, shaping their power and influence across the realm. Lyon, a young human saved from death by a blood pact with the alluring Arya Valakys—one of the king’s daughters—is unwillingly thrust into this cruel world. Bound to his mistress, he is forced into relentless battles to elevate her standing.Lyon, however, stands apart from other familiars. While they derive their strength from the fear of punishment, he draws his... from having dirty thoughts about his mistress!

In the Immortal Realm, where Immortals roam here and there, and the strength is supreme, there is a kind of existence who are favored by the Heavens.

These existences has their luck attribute boosted by thousands, and are collectively called as the Children of Luck or Son/Daughter of Luck.

Among these, Yu Tian was born with negative luck attributes and was destined to die under those so-called Children of Luck.

However, with the help of the Villain System and the powerful Yu family behind him, he will rewrite his destiny and crush those Sons of Luck and cultivate those Daughter of Luck.

At the beginning, he forced the family of the Daughter of Luck to send her to his bed personally.

There was a prominent old martial arts family which in the hundred years would give birth only to males, never a girl. Finally, one day, a girl was born. She was a tassel blower among ten thousand green groves. Ultimately, she turned into an agile and brave tomboy!

There was also an imperial descendant who his old father had six princesses. His father was just short of a son to inherit the throne. Finally, one day, he got a bastard son who was his youngest child. With countless spoiling, in the end that son was brought up into a universally unmatched egomania!

“Zhen as the nation’s number one beauty, as the nation only first class figure, obviously needs to have a professional bodyguard constantly at our side for protection. That will be you, the iron-willed female King Kong pretending to be a little eunuch.”

- Description from Novelupdates

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.