I Can See Through Everything - Chapter 92

[However, due to mysterious anomalies during host's initial awakening trial, the Aetherfall protocol has been permanently altered.Host will be subject to mandatory sequential trials even after other hosts have been offered options to trials— ALL TRIALS FOR HOST WILL BE MANDATORY.Until Paragon Ascension has been exceeded.Failure to complete any trial will result in the utter and irreversible termination of spirit and vessel.In summary:Host will either survive or be terminated.]---The regular nobody, done in by Truck-kun after being... distracted,transmigrates into the body of a side character from his most hated novel—during the awakening trial.Somehow, he finds a way to survive... or so he thought.In a world where everything revolves around the MC, a side character destined to die can only bring bad omens.He's given a near-impossible task by the trial system of this world—along with no option to reject other than death.And in a novel where characters were once one-dimensional, they’re now being seen from every side and perspective—things are far more complicated than he ever imagined.A world where heroes are hidden psychopaths, villains are deeply misunderstood,teachers are unstable, and teenagers are... Let's just say hormonal.What could possibly go wrong?

For ten years, I supported villains with the intention of reforming them. But now, I find myself as the ultimate mastermind behind the kingdom’s darkness…

In order to chase down and kill her own murderer, Xia Yichu reached an agreement with the 233 system, and she will travel through the world to complete the task, and The 233 system helped her return to the original world.
However, Xia Yichu often encountered a broken BOSS while he was on his way to do the task. He did n’t agree with each other on the wall, the bed, the various patterns, and kept talking.
System: Please use one word to describe the other person’s impression in your heart.
Xia Yichu: Competent.
Shen Jiaye: Mine.

- Description from 69shu

Chen Sha came to a world of immortal martial arts and was ordered to take charge of the world’s first sect.

Before his death, the previous chief told him:

“If you don’t become the best in the world for one day, you are not allowed to go down the mountain for one day.”

So he closed himself in painstakingly, crossed the heaven gate in his body, and faced off against the ancient and modern powerhouses…

…

Many years later, Chen Sha recalled the day he went down the mountain,

From the moment he descended the mountain, he was number one in the world.

In the next ten epochs, any gods and demons have returned, immortals and Buddhas have lived in the world, ancient powers and ancient gods have appeared one after another.

No matter how the times change, he has always been No. 1 in the world and has never changed.

- Description from novelbuddy