シンデレラの義姉は悪役のはずでしたよね？

Sophie, Cinderella’s stepsister, had understood her role from birth.

She was a villain and a supporting character, destined never to be happy. But she was fine with that.

On the surface, she acted as the villainous noblewoman, while eagerly waiting for the day when the prince and Cinderella would be united.

When things didn’t go well, it was Elbert, a self-proclaimed wizard, who came to her rescue.

The price for playing Cupid in Cinderella’s romance was—”Become my wife!”

Wait, what do you mean you’re actually the Emperor, not a wizard?!

Where are we?! Take me back to my country!

Hey, where do you think you’re touching? That’s harassment!!

Still, I’m the one who asked for help, and now there are other conditions to consider…

Well, for now, let’s start as fiancés…?

For the three months of their limited engagement, the rules are:

1. Sleeping together every night

2. Kissing whenever Elbert wants

3. No making babies unless Sophie initiates it

After three months:

If Sophie falls in love with Elbert, she will become his wife.

If Sophie does not fall in love with Elbert, her memory will be erased, and she will be returned to her country.

This is a story about Sophie, who only knew how to live as Cinderella’s sister, being doted on and obsessed over by a wizard-emperor until she falls for him.