This Japanese Monogatari Isn't Lame - Chapter 640 - 396. Believe in Science (4000 words)

Andrew, the strongest mage of his dying world, made a final stand against the demons who devoured his homeland Arcana. But even after slaying their commander, he was forced to watch his universe collapse into nothing. With no future left, he used a forbidden spell to cast his soul across dimensions... right into the body of Mark, a struggling 21-year-old college student on Earth.Earth knows nothing of magic, nothing of the system nothing of the destruction heading its way.But Andrew remembers everything.This time, he isn’t fighting to save a world.He’s here to take revenge, before the system can begin their invasion anew.__________

A wicked mother one day brought home a girl. The child was the hidden legitimate daughter of the duke, the heroine of [The Duke’s House Has Three Sons and One Daughter] Loretta. I was Melody, the villainous girl who tormented her and was condemned along with my mother. Not wanting to die like that, I decided to start treating her well now. I personally fed Loretta, put her to bed, and played with her. And then her reaction was…? “I want Melody to marry me!” Caught off guard by her endless affection, I too ended up entering the duke’s family, “I’ll stick right by Miss Melody’s side.” And there, it seems I’ve met a young lord who’s an even bigger ‘Melody fool’? All I did was be kind to survive, but why am I being loved…?!

In the distant future on Earth, there was a girl with God-like powers. That girl is the last survivor of the former human race that flourished in ancient times.

The Ancients.

And on that very same Earth, a new breed of humans with the ability to wield Magic emerged.

That girl began to observe the new human race silently.

Sometimes called a God, other times called Satan, that girl continued to observe the new human race.

This is the story of the happenings between the lonely girl and the hardworking new human race.

This book is about how a famous web writer who specializes in doting genre falls in love with a Mr. cellophane writer who specializes in angst genre.

- Description from Novelupdates