Sin of Lust.
My sweetheart darling. My number one NPC in the entire world of Zarraf.
She was my love at first kill.
Why kill? Because killing her always dropped the best gears.
Unlike other NPCs, she had the power to come back to full life even after being killed completely. This was because of her ability to split her body into multiple parts, each functioning on its own.
It wasn't a cloning skill that allows you to create a copy of yourself, but more like a skill that allows you to divide your entire existence from the original into two or more. And the sin of lust obviously used it over herself multiple times.
Perhaps a dozen times or more, enough to cover quite an amount of the continent.
Though as anyone could have guessed, that skill not just created a copy but an entirely new existence similar to the original. Which gave rise to a conflict, which led to a kind of self doubt for the sin of lust herself.