In the World of Sword and Magic as Space Marine - Chapter 2: Counterattack

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

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

At Divine Wind Continent, there is cultivation system—douqi, illusion and magic.

Ren Tian You was a fan of Naruto, and a single moment of carelessness caused him to arrive in different world.

Unexpectedly, only to discover that his body possessed Naruto system!

What? You will use douqi! I, your father’s taijutsu is also not weak! Look at my shadow dance!

What? You will use illusions! I, your father however have every illusions’ ancestor, Sharingan! Look at my Tsukuyomi!

What? You are a magician! I, your father am a ninja! Look at my fire style——– grand fireball!

- Description from Novelupdates