From Idler to Tech Tycoon: Earth - Chapter 49: Incursion

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

Working as a henchman for his childhood crush hasn't been great.

But Sam is a hopeless romantic. Even though she's a failed supervillain, he decided to work with her so that he can at least stay by her side.

Although things began to change when Kiara, his childhood crush, started developing feelings for a particular young man.

Now if it was just any other guy, he would've met with some unfortunate 'accident' already but the guy in question was none other than the son of the strongest superhero himself.

Starboy aka Anthony Willburn, the reason for all their failures up until now; and she decided to fall for THAT guy!?

Sam couldn't accept this absurdity and decided to ruin his love rival's life by embracing his destiny and rising as a supervillain himself.

Set in a distant future where only the chosen few are graced with superpowers, the story will mainly focus on the perspective of our protagonist as he will enroll in an academy of superheroes to get close to his love rival and find his weakness all the while maintaining his life as a supervillain.

Kai of the Sorcerer’s Tower is one of the last mages left, barely surviving in a world ruled by creatures of the dark — where the era of mages ended, and most of the lands got contaminated with dead mana. To save his world and fulfil his master’s last wish, he put himself through a forbidden ritual, risking his soul being ripped into pieces to make his way into the past. In an era with abundant mana — an era yet to enter the Golden Era of Magic. Things go wrong, of course, as they always do, and he finds himself thousands of years before the world fell to mana contamination — in the body of a young lord, Arzan. All is not well, though, as the young lord was murdered by someone right at the cusp of a beast wave threatening the territory, while larger threats loom on the horizon. There was a lot to do for Kai to regain his former strength in this time of primitive technology, but then again, he might just be able to change that.

Even in his dreams, Li Tianming can’t stop himself from laughing! Why? Because, his family pets are all the Primordial Chaos Beasts of myth!