MTL - Billion Technology Crystal System - Chapter 596 : Big news! Seek full set!

When Su Yaya awakened, she found herself in a novel world as the CEO’s Substitute Wife–-a mere cannon fodder. Knowing that divorce and a tragic ending was awaiting her once her look-alike, the President’s first love returns, Su Yaya only trusted one thing: Money.

She curried favor with her husband each day, saved up resources, and served him as a faithful wife. It was better to leave a good impression on him before separation so she could avoid her death flags.

The overbearing President was very satisfied with her and personally gave her his platinum card: “Take it and buy anything you’d like!” Su Yaya happily accepted. Of course she would take advantage of his pampering before the female protagonist appears!

As the CEO unexpectedly falls deeper despite this transactional relationship, he never imagined that his wife would one day disappear from his side.

- Description from Novelupdates

Taking place within a world of Measurements―superpowers owned from birth, with most being absolute trash.A world involving numerous secret organisations looking to take advantage of those rare and remarkable few possessing exceptional powers.When there exists Forbidden Knowledge better left unknown.When the discovery of said knowledge results in the inevitable; a world-ending catastrophe.‘Ignorance is bliss.’Fighting against the unrelenting persistence of the one who knows all.Before the tragic fate of the world repeats itself once more.―He must be stopped.

He Tiantian had always treated the people around her with a grateful heart. Yet in her middle age, she discovered that she had been living in a deception filled with lies.Returning to the past, He Tiantian, with the assistance of the Little Silver Snake, began a new life.From a different perspective, so that was the truth!In this life, she would never again be willingly blind.In this life, she would never again miss out on or take for granted her childhood sweetheart, who had treated her with true affection. She would treat him well, trust him, and have a warm home.******

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.