One Piece: Fist of the World - Chapter 26: Explosive Fruit!

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Lin Chuyi, after meticulously selecting for three years, chose a high-quality boyfriend, only to be cheated on a month into the relationship. She decisively broke up with him and immediately took the place of the Ye Family's daughter, marrying the heir of a wealthy family, Sheng Tingyuan.She planned to leave gracefully when the Ye Family's real daughter returned.Sheng Tingyuan blocked her path, “You lied to me and now you want to run away?”Lin Chuyi, “Don't you hate it the most when people lie to you? Should I not run and wait for you to deal with me?”Sheng Tingyuan pressed her into a corner, “You're not 'other people,' wife.”

Here, only those with spiritual roots can cultivate while those with mortal roots are destined to stay mortal.

Mo Wuji only has mortal roots, but will he only remain as a mortal?

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