My Yandere Succubus Daughter is Mommy-Warrior's Natural Enemy - Volume 1 Chapter 31

In a world where strength determines one’s future, William, an orphan with no extraordinary talents, faces a grim destiny—until a brutal attack leaves him clinging to life. Instead of death, he awakens to a mysterious and powerful entity lurking within his mind: the Shadow System, a game-like interface that promises him unimaginable power. But this power comes with dark secrets, and refusing it would mean his death. Forced into a pact with a voice that can hear his every thought, William must navigate a dangerous new reality where shadow abilities and celestial power collide. As he enters the prestigious military academy, his newfound abilities draw both allies and enemies, all while a deadly conspiracy brews in the shadows. With the odds stacked against him, William must unravel the mystery of the Shadow System and decide whether to embrace the darkness within—or be consumed by it. His journey from a bullied outcast to a potential god will challenge not just his survival, but his very humanity. Power always comes at a cost—will William be able to pay the price? “What am I?” William asked the system. The system’s voice echoed in his head, cold and indifferent. “You are nothing.”

Having being plagued by same dream for the past six years, Chu Yanshen discovered a little boy who looked just like him out of the blue. It was only then did he, Chu Yanshen, learn that he had been deceived by the little lass six years ago…

- Description from Novelupdates

Three hundred years since the founding of the Great Jin Dynasty, the fortune of the country has been prosperous. In the imperial court, there are great Confucianists who make their promises.

Zuo Daoqi traveled to this world and became a little eunuch who was about to be thrown into the cold palace.

The court was treacherous, and the rivers and rivers were vicious. He just wanted to live on honestly.

But accidentally opened the script of life, can see through other people’s future scripts, and can get rewards after completing tasks.

The first thing that caught my eye was a little loli who was about to become an empress…

From then on, Zuo Daoqi planned to stay in the cold palace, study the game script well, and train the future empress by the way.

In my spare time, I’ll talk to the queen mother, imperial concubine, princess and so on.

His original purpose was to protect himself, so that he could leave the palace as soon as possible and become a rich man.

…

Until one day, a little eunuch came to Zuo Daoqi’s side,

“Nine thousand years old, the empress dowager said it’s time to serve her tonight.”

- Description from novelbuddy

An otaku with a hobby of masturbating was reincarnated as the son of a great mage.

As soon as he was born in this life, he vowed with a goal of embracing women till his death.

That said, when he became 20 years old, the Demon Lord which was sealed by his ancestors revived, and now it is his role to seal it once again.

And that demon lord is sealed in a tower dungeon that is rumored to be impossible to capture.

However, by an unexpected coincidence, he had found out that the Demon Lord is also one of him, a kindred spirit from within,

so he joined her instead and filled several traps in the tower dungeon, and thus they enjoyed a s*x spree with all the women coming over!