I'm the Mysterious Leader of the Salvation Organization - Chapter 544:

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

Zhong Yuhuan had transmigrated into a book and became the female supporting character who was destined to die an untimely and tragic death. Coincidentally, her family adopted two boys — the male lead and the villain of the book!

The male lead of the book would become a superstar in the show business and the villain a super successful and powerful businessman.

Zhong Yuhuan thus began her life of raising the male lead and the villain while faceslapping other scums. She would grow up quickly and live the life of the rich and powerful Mary Sue!

- Description from Novelupdates

In the book “The Sweet Wife of the Campus Heartthrob”, Chu Yang was an extremely capable female supporting character. She came from a poor family and had a weak and delicate appearance. She followed the main couple around pretending to be pitiable while secretly trying to sabotage their relationship so she could take the female lead’s place.

Later her true colors were revealed and she was spurned by everyone. When she fell ill, there was no one to take care of her and she died alone in her shabby little shack. By the time her body was discovered, it had already started to decay.

Chu Yang, a witch who had transmigrated into the book: …Crash! Why bother with men! Making money is so much better than chasing men.

Much later, Chu Yang secretly felt up the abdominals of the man next to her: Mmmm, sometimes playing with men is pretty nice too.

Chi Yan, who had just woken up, felt his ears turn red: My girlfriend seems to really like my abs, I should work hard to maintain them…