I am a Gao Fushuai Villain - Chapter 447:

A tale about the former leader of a special organization served under royalty, now leaving his past life behind and unintentionally getting involved with the martial world.

- Description from Novelupdates

Drugged one night by her ex-boyfriend, a mysterious man took advantage of her in an ecstatic night filled with sex.To take her revenge, she married the man, and used him.

Once time travels, Wei Han awakens the immortality system!

In this dangerous and mysterious world, he decided to live forever!

“What’s the point of fighting and killing? Isn’t it nice to hang up?”

“Enemy? Doesn’t exist! As long as we cut the grass and roots, I have no enemies!”

“Exposed? Impossible! As long as no one is left alive, no one will know how strong I am!”

The sun and the moon are flying like a shuttle, and the sea is changing!

With a cautious heart, Wei Han silently walked alone on the road to longevity.

A rare martial arts wizard in a thousand years?

The rare immortal cultivator?

Suppress the eternal holy land of immortals?

After all, it is no match for the passage of time and burial!

Only Wei Han sat and watched the wind and clouds surge, and finally became invincible in the world!

- Description from novelbuddy

Ajax was an orphan who survives a massacre along with his friends but unfortunately gets separated from them.

Fortunately, after a turn of events, he successfully gains a system which helps him increase his cultivation, but doesn't know what it is called.

But he knows one thing for sure, this system is very powerful and helpful in taking his revenge.

“Whoever you are, I am gonna find you”, Ajax mumbled himself with a disgruntled expression.

In a world where Summoning of an elemental spirit is done through a dream when they are 15 years old, Ajax with the help of a system and his summoned spirits sets out on a journey to seek revenge against the mastermind behind the massacre.