I Play Yu-Gi-Oh! Card Game - Chapter 1475: Crouching Dragon, Young Phoenix

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

Story about human babies raised by monsters in a world of sword and magic.

Allen is an orphaned boy that had lived a rather pleasant life with his orc mother in the bowels of a deadly dungeon, until the day a band of humans ventured down to loot and pillage the home they had come to think of as safe.

They took everything that Allen had, and drove him further away from the humanity. In anger and anguish, Allen turned his back on the humans. He encapsulated himself in a deep-seated hatred of them, refusing to associate with them in any way—even going so far as to reject any attempt at kindness.

Allen begins his journey in a world of human with full of deceit, danger, envy, and politics.

Tian Shao wore it, and became the eldest of the six golden flowers of Tian Dalin’s family in the Hongqi Club in that difficult era.

In a family, the parents are dull and the mother is aggressive, the second sister is violent, the third sister is taciturn, the fourth sister is gluttonous, the fifth sister is brave, and the sixth sister is a cabbage.

Patriarchal? Don’t be afraid, a girl is better than a son. Familiar with nothing? Don’t be afraid, go to the factory to do business, and the small life is booming.

…

It is said that men chasing women, the mountains are separated; women chasing men, the gauze is separated. Tian Shao was puzzled why she and Pei Yue were separated by mountains.

Forget it, the iceberg is too high and cold.

Pei Yue stopped Tian Shao and said, “If you flirt, you have to be responsible. Let’s go to the Civil Affairs Bureau to get the certificate.”

- Description from novelbuddy

In the year 2025, humans awakened with the ability to summon mighty beasts—capable of destroying terrains, breaking the laws of physics, and creating wonders limited only by one's imagination.But before these blessings came a curse.An alien face appeared from nowhere and threatened all life on the planet, leading to the greatest war in human history.In the aftermath, the human race and the alien race were forced into a shaky treaty that could be broken at any time.Years later, tests for summoning abilities began for the next generation. Those who awakened low-grade summoning would be thrown to the gutters, while those who awakened higher got to join great factions after graduating from the academy.Kairos Veyl, the blank, calculating student, pulled his hand from the massive crystal pillar and stared at the large beast before him.“This kid—he just got a LEGENDARY SUMMON.”A legendary summon? The greatest class of summoning. However, with this class came a risk one would have never guessed.