"If you can tempt me, I will spare your life."

I was supposed to be just a normal high school girl, but before I knew it, I had become a princess in another world, targeted by an assassin.

Why did I switch places with the princess?

Why did I make such a strange deal with the assassin?

Why had that very assassin infiltrated as a temporary bodyguard the very next day?

Without understanding anything at all, my cohabitation with the yandere assassin began…