The Guardians' Throne - The First Magic Swordsman - Chapter 23 - Difference

It was supposed to be a perfect deal in which both parties got what they needed. However, after the child was born, he tore up the agreement with discontent and told her, “Who said that we’d only have one child? I want twins! Twin brother and sister! You’ll continue giving birth to more children until you bore me a pair of twins!”

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

She pulled the trigger.Time shattered.And somehow… I survived.Kentaro Takamiya thought he was just another broke college student.Until the day a silver-haired girl appeared in his classroom, froze the world… and nearly erased him from existence.Now he’s the only human ever to survive contact with an Alberline.Beautiful, mysterious girls whose emotions are so powerful they can bend time, space, and reality itself.Some, like Halcyon, believe Alberlines can be saved.Others, like Cradle, see them as living weapons that must be destroyed.And then there’s Spire, a private force moving in the shadows, willing to burn nations to harness Alberline power for their own secret ends.Kentaro’s caught in the middle, with one impossible mission:Enter their minds.Make them fall for him… enough to save the world.And stop their emotions from tearing it apart.But with each connection, the truth unravels.The memories he’s lost begin to surface.Factions close in around him.And someone in the shadows is watching his every move, waiting for their moment to strike.Because Kentaro isn’t just syncing with Alberlines.He’s becoming something else.And if he loses control…it won’t just be his mind that breaks.It’ll be reality itself.

Waking up as the most hated noble family in a fantasy world is bad. Inheriting a 50,000 gold debt with a death sentence attached is worse.​But the Sanusi family isn't scared. They are from Earth, and they brought the Industrial Revolution with them.​Now, the magical realm faces a new kind of warfare.Knights vs. Tanks.Mages vs. Railguns.“You have a Dragon? That’s cute. We have Anti-Air Cannons.”​It’s time to pay debts and conquer kingdoms.