MTL - Magneto of Hyuga - Chapter 38

She is the underworld Ghost Doctor’s only disciple, who accidentally transmigrated into the body of the main wife’s daughter in the general’s mansion. She used to be a punching bag.Now, she stepped on her dregs of an older sister, put her father’s concubine in her place, and teaches any objectionable aristocratic ladies a lesson.

Her days are rather free and unfettered. But when did that cold as ice prince from the rumors, sporting a deadpan face all day long, fix his gaze on her?
He unexpectedly fawned and pandered to her like a devoted dog?

“Go away, you rotten man! Careful or I’ll needle you like a pin cushion!”

“Wife, why are you so fierce? As a husband, I’m so scared”
….the man is all smiles as he approached, his eyes gleaming with a cunning light.

- Description from Novelupdates

The ancient empire was on its last legs, the nascent federation echoed with the roar of steam, slumbering gods gradually awoke, and colossal beasts that vanished in the primordial era were slowly emerging.When Laine arrived in another world, a magical profession panel awakened within him as well.Laine believed that if a person's life could keep growing stronger, one day they would certainly be able to control their own destiny and stand shoulder to shoulder with the gods!

“You don’t want to be forced to match, right, Lin Changan?”

The delicate-looking girl asked softly, and pushed the “Personal Subject Relationship Contract” to Lin Changan’s eyes.

Lin Changan’s eyes were full of despair, but fortunately, he awakened the simulator system, which could simulate life infinitely.

After each simulation, you can choose talents, realms, combat experience, cultivation insights or some memory fragments.

[You rejected the “Personal vassal relationship contract”, signed an implication with a girl, was killed by a love rival in the dungeon, and you died. 】

[You chose to eat soft rice hard with talent. 】

[At the age of 22, the sickly junior girl confessed to you that she was rejected by you. Since then, she will poison you quickly because of love and hatred. 】

[You chose a talent that is invincible. 】

[At the age of twenty-four, the beast tide struck, and you were drowned in the beast tide. 】

[You have chosen the realm and condensed the power of the stars. 】

[At the age of twenty-four, the beast swarms attacked you. As a general, you were exhausted and drowned by the beast swarm. 】

[You have chosen an inexhaustible talent. 】

[At the age of twenty-four, you went to the front line to resist the beast tide, and your spiritual power is inexhaustible…]

After countless simulations, there are stars twinkling in your eyes, and every move is blessed by heaven and earth.

【The simulation starts! 】

【You are invincible, the universe is respected! 】

- 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.