MTL - Book of Technology - Chapter 177 Put into use

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!

This is a story of Xia An, a transmigrator from the end of the world, who transmigrates into the body of a cannon fodder who was the mother of the villain.

- Description from Wattpad

The unparalleled Demon King Ye Xuan, who was able to heal the death or the living alike and holder of the medicine Holy Scripture, was betrayed and killed by his fellow Demon Kings. But he reincarnated into the body of Ye Xuan, the prodigal son of the Ye family and vowed to himself that he would return to his peak and take back everything that belonged to him!

- Description from Novelupdates

After transmigrating to the parallel world of Blue Star, I, a top influencer, being exposed of having multiple girlfriends?Awakened a system, and the system has a kind of performance card prop which, when used, directly adds to performance?Fans:“Haha, it's good that this dead scrub was exposed, such a person should fade into obscurity!”“No way, how did this dead scrub's album break nine million sales, are you guys sick? You drop your fandom yet still buy his albums?”“What, the dead scrub's online store exploded in sales? It's all fans buying? What kind of crazy fans are these, get out!”“Ah, he broke five billion in box office now? The industry is buzzing about his fans being the top in breaking ranks?”“What happened to swearing off being fans and blacklisting him for life? Is this your idea of blacklisting!?”