The Geared Immortal - Chapter 591309 Heavenly Samsara:

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.

Two years ago, Lin Chou Sui’s firefighter father sacrificed himself in a fire.

The last conversation between father and daughter ended in a big fight.

Lin Chou Sui woke up crying countless times in her dreams, wishing that if her dad could be reborn, she would obediently listen and never talk back.

Little did she expect that her dad would actually be reborn!

His soul possessed the body of Xiao Yan, the academic god of their high school.

…

Xiao Yan excelled in both character and academics. His total scores never dipped below 700. All the girls at their high school knew: getting into Tsinghua or Peking University was easy, getting close to Xiao Yan was difficult.

But Lin Chou Sui noticed that recently, the way Xiao Yan looked at her was very strange. His aloofness contained deep affection; his affection…was full of fatherly love?

So Lin Chou Sui’s daily life became:

Before exams, Xiao Yan would give her his notes to copy.

During her period, Xiao Yan would brew her red date tea and cook porridge.

Bad boys who blocked her path and harassed her would get kicked flying by Xiao Yan.

Lin Chou Sui was very touched. Other than her dad, no one had treated her this well.

…

On a hot afternoon, Xiao Yan sat with Lin Chou Sui on the stairwell to do homework, his gaze tender beyond words.

A light breeze blew by. The youth was about to lean in to kiss her.

Suddenly, a cold, icy male voice sounded in his mind:

“Young Xiao, may I ask what you intend to do with my daughter?”

Xiao Yan: ……

Xiao Yan crawled out from the mud. Beneath his cold and aloof appearance was a sinister and vindictive nature.

To climb from the lowliest dust to the summit out of reach, the path was filled with thorns. For this purpose he would stop at nothing, sparing no cost.

However, all the darkness and gloom in his life ended with that one strange encounter…

From then on, the skies cleared and his dead end led to new life.

A sinister genius boy meets a muddled Failure girl

Hasami Tatsuro and Yashiki Ai, two ordinary teenagers, experienced an earthquake while on the way home from school.The earthquake cracked space and transported the two to another world.Landing in an unknown forest, the two initially began to grieve. However, unbeknownst to them, a system had installed itself into their bodies, granting them the ability to gain skills and statuses.Hasami Tatsuro obtained the “Level Eater” skill. “Level Eater” allowed the host to devour others’ levels/skills and make it his own.Yashiki Ai obtained the “Valkyrie” skill. “Valkyrie” allowed the host to obtain and use any offensive skills from different classes, without the need to specialize.With their cheat skills and teamwork, they managed to venture out of the forest and explore the new world.This is a story of two ordinary kids.