Marriage First, True Love Later - Chapter 235

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

This is a world where humans, demons and mysterious beasts coexist.

Humans cultivate mysterious qi. Demons cultivate corporeal bodies. Mysterious beasts cultivate soul perception.

A legend says that in the middle of an endless rainforest, there are extremely powerful existences; they are called demon kings.

Some demon kings have a tyrannical corporeal body, some are experts in illusions.
Some demon kings are proficient in magic, some can even move mountains.
Some demon kings are able to sense things thousands of miles away.

These demon kings rarely appear in the human world. Even if they emerge in the human world, they would reincarnate in human form; assimilating with mankind while seeking to breakthrough realms…

- Description from Novelupdates

She was the heiress of the influential military and political Shen family. She possessed an exceptional face and a cool demeanor. Although she was the apple of her family's eye, she was disliked by her birth mother.He was the only heir to the immensely wealthy and powerful Fu family. Powerful, arrogant, and cold, he was the captain of a stealth corps and the youngest commander.To fulfill her grandmother's final wish, they got married in a flash. Initially, she regarded the marriage as a mere contract, but she did not expect to elicit his utmost admiration.

With his engagement at hand, the most terrifying and legendary person of the legal world, Fu Huai’an, returns with a son.