This Lady Is Trying to Kill Me - Chapter 19

They were born with magic, raised in chaos, and trained in sarcasm.Now the royal kids are all grown up—and the world isn’t ready.Between family feuds, resurrected villains, and a five-year-old firebender with an attitude, the palace is basically a magical daycare with crowns. But when revenge hits home and the kids take charge, things get wild, weird, and a little too flammable.Royal duties? Nah.Sibling wars? Always.Saving the kingdom? Accidental.Welcome to the most dysfunctional, dangerously magical, and absolutely hilarious royal family you’ll ever meet.

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

Under everyone's gaze, her pregnant sister came to force a marriage, making her the butt of the joke, after being cheated on.When she was at her wit's end, she met him ——Jun Mochan, the business tycoon.He said: “Marry me, I won't betray you.”In order to shut off the wagging tongues and avoid becoming a bargaining chip in a family alliance,She said: “Okay”But, wasn't it agreed that it would be a fake marriage?He loves her deeply. The whole world knows it, only she doesn't.

[Simulation] + [Isekai] + [Goblin] + [Harem]After a long sleep, I awakened in a new life—as a goblin. Weak and insignificant, I found myself reborn as the lowest creature in a world filled with hostility and danger. But from the shadows of this cruel world, a silent rise begins...