League of Legends: League of Unknowns - Chapter 99 - Life and Death in 0.4 seconds

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

When the goddamn story leaves you no choice but to walk the path of the villain,The heroes aren't enough to save the world, as the calamity ultimately kills everyone and everything.Then, only by becoming the demon king can you survive, and only the demon king can save the world, but how?Of course, by conquering every other race, obviously.Can Axel become the demon king and survive, maybe save the world in the process?

A high-ranking Duke’s daughter, Roxana, and her fiancé, the crown prince.

Everything came crashing down when a Baron’s daughter Claire came between the two.

Honor, reputation, even her fiancé, the Crown Prince…..

In the depths of despair, the infamous Grand Duke Elvin reached out to Roxana.

“I can help you.”

It was a dubious proposition, but Roxana accepted it in the end……

The fragile and lovely Claire and the wicked Princess Roxana.

But who was the real villain?

“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