10 nen goshi no HikiNiito o Yamete Gaishutsushitara Jitaku goto Isekai ni Ten'ishiteta - Chapter 3, Part 4 Yuuji’s Imouto Sakura, Concerning the Situation in Japan

A genius inventor dies and awakens in his younger self's body... but not quite. This isn't his original younger self-it's an alternate version from a reality where the supernatural is real.To make matters even more chaotic, he discovers that someone has decided he is the successor to Solomon. Now, he possesses the power to enslave devils. Armed with his intellect and newfound abilities, it's time to spark a worldwide revolution... starting from his garage!---Tags: Neutral-Evil MC (enslavement, selfish MC), Harem (of course), Inventions, Technological Progress, Sacred Gear Creation, AU DxD Universe (part of Dragon's Omniverse).This fanfic is a STEAMROLLER, with the main focus on the MC's development and his technological innovations, as well as their impact on the world. If you're looking for drama, suspense, or epic battles with no real purpose, this isn't the story for you.

The protagonist is reborn in the world of the game he loved so much – [Dungeon Brave Souls]. However, he was reborn not as a hero who adventures with the heroine while flirting with her, but as a villain who steals the heroine and drives the world to extinction.

Why in the world should he be reborn as a villain who ruined his favorite game? The protagonist is in despair, but he still decides to live his second life freely, using his knowledge of the game. However, the reality is not as good as he expected. Events that should not have happened in the game, scenario changes happen one after another…!

The villainous character crushes both the demon king and the heroes. A heroic tale of evil supremacy!

Abandoned at birth in a humble stable, Shirone was raised by commoners—but he was anything but ordinary. Blessed with remarkable insight, he taught himself to read at a young age. A fateful visit to the city introduced him to the wonders of magic, igniting an unshakable dream of becoming a mage. Yet, beneath the city's dazzling facade lurked a ruthless social hierarchy, where power and privilege crushed those who dared to rise above their station. As Shirone uncovers the world's darkest secrets before even coming of age, one question remains—can he defy fate and claim his destiny as a mage in a world determined to keep him down?

(1V1, Shuang Jie, Two-way Secret Love, Chasing His Wife Long, Banning Cookies)

(Cold and dumb elite secretary VS paranoid and fierce loyal dog president)

Jiang Mingyu, a well-known all-round secretary in City A, is low-key and humble, with outstanding strength, and is a top talent that no one in the industry does not covet.

But no one knows that she has lost a memory in her brain, so she suffers from a mild emotional disorder and is also troubled by nightmares.

Tang Jinchuan, a terrifying business boss, has a level that must be avoided.

But also no one knows that he accidentally fell in love with his secretary, but he never managed to grasp the other party’s heart.

*

In an accident, Jiang Mingyu found her panacea, but at that time, she didn’t want it.

It was not until she was forcibly pressed against the door of the office and had nowhere to escape that she had to face the man’s gentle and cold question,

“Jiang Mingyu, what are you running for?”

Only later, people still ran away.

The angry-eyed CEO chased half the world, and after finally catching the person back, he directly locked him in the basement.

In the endless reversal of day and night, Jiang Mingyu’s eyes were red, and she couldn’t help trembling and asked,

“Tang Jinchuan, what are you doing?”

“……you.”

- Description from novelbuddy