Transmigrated as the Mary Sue's Queenly Older Sister

After a disaster had passed, the seven kingdoms of the Anhais Continent jointly held the grandest sacrificial ceremony in the continent's history, to thank the gods for helping them survive.

As the queen of her country, Sisia had to attend. Looking at the people fervently worshipping and thanking the gods, Sisia felt deeply aggrieved.

She had spent a fortune inventing the internal combustion engine and launching the Industrial Revolution. She had developed compound fertilizer, built granaries, united the kingdoms' scientists to clear the floodwaters, rebuilt the dams, and saved countless lives. So why was everyone thanking... the gods?

Sisia felt wronged: They hadn't done a thing!

The god who had descended into this world read Sisia's thoughts and slowly formed a question mark in his mind.

Sisia had a secret: she had transmigrated here, and she knew that her world was actually a Mary Sue novel. The heroine was her adorable younger sister, who would be kidnapped by evil-god cultists and offered as a sacrifice after the ceremony.

Her sister would then use her kindness and purity to change the male lead, an evil god, and make him give up on destroying the world.

But... the plot had run into a little problem.

The evil-god cultists had kidnapped the wrong person! They'd taken her!

Fortunately, although the plot had gone a little awry, the world's will was still on her side. Whenever she was captured by mistake, a gentle male voice would tell her how to escape. And when necessary...

Mountains would part for her, rivers would change course, and the sea would recede.

All beings follow my gaze, and my gaze follows you. - Origin and Creation

God, the way you put it, you'd think I was your god. - Sisia

P.S. The male lead isn't the evil god. He's Origin and Creation, the one who created the evil gods and all the other gods.

Theme: Fate is meant to be changed.