I Became a S*ave to The Mastermind

I posted a prediction of the next story in the novel and was told not to spoil it.

In order to not interfere with the main character’s progress, I lived well in the area that only appeared in the novel’s setting.

One day the Mastermind came and told me to become her s*ave.

“Our Hera… You need to be a good girl, right…?”

Please save me.