MTL - The Roots of Manga - Chapter 57 the upper hand

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.

A young man woke up to a world of magic and endless possibilities.He was transmigrated.Great!Only that he now had three huge problems.One, he had no memories of his past.Two, he was a villain destined to die no matter the outcome.And three, the heroines were all kinda... should he say, obsessed?Yeah, he was fucked.[Note]No Yuri.Conflicting emotions of MC due to loss of memory for the first part.Huge plot twist, so don't fall for whatever you see.NTR? Not.But probably netori.Beta MC? Big No.Harem? Yes! Don't ask me how but I'll make it possible.

Transcend to become the prince of Daxia, activate the Devil Emperor Summoning System, summon the powerhouses from other worlds, and fight for hegemony in the heavens!

If I were the Devil Emperor in the future, I would definitely let your blood stain the sky!

- Description from novelbuddy

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!