She transmigrated to the continent of Seguru and became a girl named Ivel.
Ivel discovered that she could form contracts with people and raise their affinity. Increasing their affinity brought her all sorts of benefits, so she worked hard at conquering them every day.
Huh? How could the girl I contracted with on a whim be a princess?
Wait, what? The silly girl I contracted with is actually the world's greatest assassin? Seriously?
I picked up another girl and made a contract with her. Let's get started on raising our friendship... What? You're a queen?