YUGIOH: It's Time to Duel! - Chapter 22: Danger, Threats in the Shadow!

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.

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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

A lecherous army special task force soldier from 21st-century Hong Kong is selected to travel back in time, choosing to go to the Chinese Warring States Period. Unfortunately, the time machine runs into an error during the experiment. With no foreseeable way to return to the present, he must use his combat skills and knowledge of history to thrive in his new life in the year 251 BC.

Number 23 had it all.A warrior of unmatched power, a Transcendent capable of annihilating armies single-handedly, he was revered as a god among men. He seemed to have everything with wealth, fame, and influence at his fingertips. Yet beneath his cold, ruthless exterior lay an unfulfilled yearning—an elusive desire he couldn’t quite grasp...He wanted to be a hero.Despite his monumental achievements, Number 23’s quest for heroism remained unfulfilled. His life took an unexpected turn when he discovered a book titled [Bright]—a bestselling epic depicting a true hero's journey. Enchanted by its tale, Number 23 became obsessed, devouring every word in search of the heroism he craved. But his journey was cut short when he fell victim to a deadly ambush orchestrated by rival Transcendents, leading to his untimely execution.In his final moments, a single regret lingered in his mind.“I never got to see the ending of [Bright]...”As if answering his unspoken wish, Number 23 was reborn into the world of Bright—not as its celebrated protagonist or a key figure, but as an insignificant extra. Stripped of his former identity, he now inhabited the role of Amon Solaris, a character barely noticed in the grand tapestry of the story.Undeterred by his diminished status, Amon Solaris is determined to learn what it truly means to be a hero. But in this new world, he’s about to encounter a revelation that will change everything he thought he knew…Four chapters a week. New chapters every Tuesday, Thursday, Saturday and Sunday.

I’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.

But the difficulty just has to be the worst!

Everything I do will only lead me to death.

I must be paired with one of the main male characters from the heroine’s harem before the ‘real daughter’ of the duke family appears!

Two older brothers who always pick a fight with me on every little thing.

The insane crown prince whose route will always lead to my death.

‘I only see the heroine and no one else’s wizard, and also her loyal s*ave knight, too!

‘First, let’s take some of them which I see no hope in, out of the list!’

“I didn’t know my place up until now. From now on, I’ll live as quiet as a mouse so you wouldn’t care the slightest bit!

But why do their interests in me keep on rising every time I draw the line?!